diff --git a/Resources/Private/Php/Libraries/composer.json b/Resources/Private/Php/Libraries/composer.json
index 3931bc0..f893cce 100644
--- a/Resources/Private/Php/Libraries/composer.json
+++ b/Resources/Private/Php/Libraries/composer.json
@@ -4,6 +4,6 @@
     "prepend-autoloader": false
   },
   "require": {
-    "ezyang/htmlpurifier": "^4.13"
+    "ezyang/htmlpurifier": "^4.17"
   }
 }
diff --git a/Resources/Private/Php/Libraries/composer.lock b/Resources/Private/Php/Libraries/composer.lock
index 7751e9c..6eb6f58 100644
--- a/Resources/Private/Php/Libraries/composer.lock
+++ b/Resources/Private/Php/Libraries/composer.lock
@@ -8,32 +8,39 @@
     "packages": [
         {
             "name": "ezyang/htmlpurifier",
-            "version": "v4.13.0",
+            "version": "v4.17.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/ezyang/htmlpurifier.git",
-                "reference": "08e27c97e4c6ed02f37c5b2b20488046c8d90d75"
+                "reference": "bbc513d79acf6691fa9cf10f192c90dd2957f18c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/08e27c97e4c6ed02f37c5b2b20488046c8d90d75",
-                "reference": "08e27c97e4c6ed02f37c5b2b20488046c8d90d75",
+                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/bbc513d79acf6691fa9cf10f192c90dd2957f18c",
+                "reference": "bbc513d79acf6691fa9cf10f192c90dd2957f18c",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.2"
+                "php": "~5.6.0 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0"
             },
             "require-dev": {
-                "simpletest/simpletest": "dev-master#72de02a7b80c6bb8864ef9bf66d41d2f58f826bd"
+                "cerdic/css-tidy": "^1.7 || ^2.0",
+                "simpletest/simpletest": "dev-master"
+            },
+            "suggest": {
+                "cerdic/css-tidy": "If you want to use the filter 'Filter.ExtractStyleBlocks'.",
+                "ext-bcmath": "Used for unit conversion and imagecrash protection",
+                "ext-iconv": "Converts text to and from non-UTF-8 encodings",
+                "ext-tidy": "Used for pretty-printing HTML"
             },
             "type": "library",
             "autoload": {
-                "psr-0": {
-                    "HTMLPurifier": "library/"
-                },
                 "files": [
                     "library/HTMLPurifier.composer.php"
                 ],
+                "psr-0": {
+                    "HTMLPurifier": "library/"
+                },
                 "exclude-from-classmap": [
                     "/library/HTMLPurifier/Language/"
                 ]
@@ -56,9 +63,9 @@
             ],
             "support": {
                 "issues": "https://github.com/ezyang/htmlpurifier/issues",
-                "source": "https://github.com/ezyang/htmlpurifier/tree/master"
+                "source": "https://github.com/ezyang/htmlpurifier/tree/v4.17.0"
             },
-            "time": "2020-06-29T00:56:53+00:00"
+            "time": "2023-11-17T15:01:25+00:00"
         }
     ],
     "packages-dev": [],
@@ -69,5 +76,5 @@
     "prefer-lowest": false,
     "platform": [],
     "platform-dev": [],
-    "plugin-api-version": "2.0.0"
+    "plugin-api-version": "2.6.0"
 }
diff --git a/Resources/Private/Php/Libraries/vendor/autoload.php b/Resources/Private/Php/Libraries/vendor/autoload.php
index c23ee7d..688882e 100644
--- a/Resources/Private/Php/Libraries/vendor/autoload.php
+++ b/Resources/Private/Php/Libraries/vendor/autoload.php
@@ -2,6 +2,24 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    if (!headers_sent()) {
+        header('HTTP/1.1 500 Internal Server Error');
+    }
+    $err = 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    if (!ini_get('display_errors')) {
+        if (PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') {
+            fwrite(STDERR, $err);
+        } elseif (!headers_sent()) {
+            echo $err;
+        }
+    }
+    trigger_error(
+        $err,
+        E_USER_ERROR
+    );
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInit800730d4b04101d2d87884a83e898900::getLoader();
diff --git a/Resources/Private/Php/Libraries/vendor/composer/ClassLoader.php b/Resources/Private/Php/Libraries/vendor/composer/ClassLoader.php
index 1a58957..7824d8f 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/ClassLoader.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/ClassLoader.php
@@ -42,21 +42,76 @@
  */
 class ClassLoader
 {
+    /** @var \Closure(string):void */
+    private static $includeFile;
+
+    /** @var string|null */
+    private $vendorDir;
+
     // PSR-4
+    /**
+     * @var array<string, array<string, int>>
+     */
     private $prefixLengthsPsr4 = array();
+    /**
+     * @var array<string, list<string>>
+     */
     private $prefixDirsPsr4 = array();
+    /**
+     * @var list<string>
+     */
     private $fallbackDirsPsr4 = array();
 
     // PSR-0
+    /**
+     * List of PSR-0 prefixes
+     *
+     * Structured as array('F (first letter)' => array('Foo\Bar (full prefix)' => array('path', 'path2')))
+     *
+     * @var array<string, array<string, list<string>>>
+     */
     private $prefixesPsr0 = array();
+    /**
+     * @var list<string>
+     */
     private $fallbackDirsPsr0 = array();
 
+    /** @var bool */
     private $useIncludePath = false;
+
+    /**
+     * @var array<string, string>
+     */
     private $classMap = array();
+
+    /** @var bool */
     private $classMapAuthoritative = false;
+
+    /**
+     * @var array<string, bool>
+     */
     private $missingClasses = array();
+
+    /** @var string|null */
     private $apcuPrefix;
 
+    /**
+     * @var array<string, self>
+     */
+    private static $registeredLoaders = array();
+
+    /**
+     * @param string|null $vendorDir
+     */
+    public function __construct($vendorDir = null)
+    {
+        $this->vendorDir = $vendorDir;
+        self::initializeIncludeClosure();
+    }
+
+    /**
+     * @return array<string, list<string>>
+     */
     public function getPrefixes()
     {
         if (!empty($this->prefixesPsr0)) {
@@ -66,28 +121,42 @@ public function getPrefixes()
         return array();
     }
 
+    /**
+     * @return array<string, list<string>>
+     */
     public function getPrefixesPsr4()
     {
         return $this->prefixDirsPsr4;
     }
 
+    /**
+     * @return list<string>
+     */
     public function getFallbackDirs()
     {
         return $this->fallbackDirsPsr0;
     }
 
+    /**
+     * @return list<string>
+     */
     public function getFallbackDirsPsr4()
     {
         return $this->fallbackDirsPsr4;
     }
 
+    /**
+     * @return array<string, string> Array of classname => path
+     */
     public function getClassMap()
     {
         return $this->classMap;
     }
 
     /**
-     * @param array $classMap Class to filename map
+     * @param array<string, string> $classMap Class to filename map
+     *
+     * @return void
      */
     public function addClassMap(array $classMap)
     {
@@ -102,22 +171,25 @@ public function addClassMap(array $classMap)
      * Registers a set of PSR-0 directories for a given prefix, either
      * appending or prepending to the ones previously set for this prefix.
      *
-     * @param string       $prefix  The prefix
-     * @param array|string $paths   The PSR-0 root directories
-     * @param bool         $prepend Whether to prepend the directories
+     * @param string              $prefix  The prefix
+     * @param list<string>|string $paths   The PSR-0 root directories
+     * @param bool                $prepend Whether to prepend the directories
+     *
+     * @return void
      */
     public function add($prefix, $paths, $prepend = false)
     {
+        $paths = (array) $paths;
         if (!$prefix) {
             if ($prepend) {
                 $this->fallbackDirsPsr0 = array_merge(
-                    (array) $paths,
+                    $paths,
                     $this->fallbackDirsPsr0
                 );
             } else {
                 $this->fallbackDirsPsr0 = array_merge(
                     $this->fallbackDirsPsr0,
-                    (array) $paths
+                    $paths
                 );
             }
 
@@ -126,19 +198,19 @@ public function add($prefix, $paths, $prepend = false)
 
         $first = $prefix[0];
         if (!isset($this->prefixesPsr0[$first][$prefix])) {
-            $this->prefixesPsr0[$first][$prefix] = (array) $paths;
+            $this->prefixesPsr0[$first][$prefix] = $paths;
 
             return;
         }
         if ($prepend) {
             $this->prefixesPsr0[$first][$prefix] = array_merge(
-                (array) $paths,
+                $paths,
                 $this->prefixesPsr0[$first][$prefix]
             );
         } else {
             $this->prefixesPsr0[$first][$prefix] = array_merge(
                 $this->prefixesPsr0[$first][$prefix],
-                (array) $paths
+                $paths
             );
         }
     }
@@ -147,25 +219,28 @@ public function add($prefix, $paths, $prepend = false)
      * Registers a set of PSR-4 directories for a given namespace, either
      * appending or prepending to the ones previously set for this namespace.
      *
-     * @param string       $prefix  The prefix/namespace, with trailing '\\'
-     * @param array|string $paths   The PSR-4 base directories
-     * @param bool         $prepend Whether to prepend the directories
+     * @param string              $prefix  The prefix/namespace, with trailing '\\'
+     * @param list<string>|string $paths   The PSR-4 base directories
+     * @param bool                $prepend Whether to prepend the directories
      *
      * @throws \InvalidArgumentException
+     *
+     * @return void
      */
     public function addPsr4($prefix, $paths, $prepend = false)
     {
+        $paths = (array) $paths;
         if (!$prefix) {
             // Register directories for the root namespace.
             if ($prepend) {
                 $this->fallbackDirsPsr4 = array_merge(
-                    (array) $paths,
+                    $paths,
                     $this->fallbackDirsPsr4
                 );
             } else {
                 $this->fallbackDirsPsr4 = array_merge(
                     $this->fallbackDirsPsr4,
-                    (array) $paths
+                    $paths
                 );
             }
         } elseif (!isset($this->prefixDirsPsr4[$prefix])) {
@@ -175,18 +250,18 @@ public function addPsr4($prefix, $paths, $prepend = false)
                 throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
             }
             $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
-            $this->prefixDirsPsr4[$prefix] = (array) $paths;
+            $this->prefixDirsPsr4[$prefix] = $paths;
         } elseif ($prepend) {
             // Prepend directories for an already registered namespace.
             $this->prefixDirsPsr4[$prefix] = array_merge(
-                (array) $paths,
+                $paths,
                 $this->prefixDirsPsr4[$prefix]
             );
         } else {
             // Append directories for an already registered namespace.
             $this->prefixDirsPsr4[$prefix] = array_merge(
                 $this->prefixDirsPsr4[$prefix],
-                (array) $paths
+                $paths
             );
         }
     }
@@ -195,8 +270,10 @@ public function addPsr4($prefix, $paths, $prepend = false)
      * Registers a set of PSR-0 directories for a given prefix,
      * replacing any others previously set for this prefix.
      *
-     * @param string       $prefix The prefix
-     * @param array|string $paths  The PSR-0 base directories
+     * @param string              $prefix The prefix
+     * @param list<string>|string $paths  The PSR-0 base directories
+     *
+     * @return void
      */
     public function set($prefix, $paths)
     {
@@ -211,10 +288,12 @@ public function set($prefix, $paths)
      * Registers a set of PSR-4 directories for a given namespace,
      * replacing any others previously set for this namespace.
      *
-     * @param string       $prefix The prefix/namespace, with trailing '\\'
-     * @param array|string $paths  The PSR-4 base directories
+     * @param string              $prefix The prefix/namespace, with trailing '\\'
+     * @param list<string>|string $paths  The PSR-4 base directories
      *
      * @throws \InvalidArgumentException
+     *
+     * @return void
      */
     public function setPsr4($prefix, $paths)
     {
@@ -234,6 +313,8 @@ public function setPsr4($prefix, $paths)
      * Turns on searching the include path for class files.
      *
      * @param bool $useIncludePath
+     *
+     * @return void
      */
     public function setUseIncludePath($useIncludePath)
     {
@@ -256,6 +337,8 @@ public function getUseIncludePath()
      * that have not been registered with the class map.
      *
      * @param bool $classMapAuthoritative
+     *
+     * @return void
      */
     public function setClassMapAuthoritative($classMapAuthoritative)
     {
@@ -276,6 +359,8 @@ public function isClassMapAuthoritative()
      * APCu prefix to use to cache found/not-found classes, if the extension is enabled.
      *
      * @param string|null $apcuPrefix
+     *
+     * @return void
      */
     public function setApcuPrefix($apcuPrefix)
     {
@@ -296,33 +381,55 @@ public function getApcuPrefix()
      * Registers this instance as an autoloader.
      *
      * @param bool $prepend Whether to prepend the autoloader or not
+     *
+     * @return void
      */
     public function register($prepend = false)
     {
         spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+
+        if (null === $this->vendorDir) {
+            return;
+        }
+
+        if ($prepend) {
+            self::$registeredLoaders = array($this->vendorDir => $this) + self::$registeredLoaders;
+        } else {
+            unset(self::$registeredLoaders[$this->vendorDir]);
+            self::$registeredLoaders[$this->vendorDir] = $this;
+        }
     }
 
     /**
      * Unregisters this instance as an autoloader.
+     *
+     * @return void
      */
     public function unregister()
     {
         spl_autoload_unregister(array($this, 'loadClass'));
+
+        if (null !== $this->vendorDir) {
+            unset(self::$registeredLoaders[$this->vendorDir]);
+        }
     }
 
     /**
      * Loads the given class or interface.
      *
      * @param  string    $class The name of the class
-     * @return bool|null True if loaded, null otherwise
+     * @return true|null True if loaded, null otherwise
      */
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            includeFile($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
+
+        return null;
     }
 
     /**
@@ -367,6 +474,21 @@ public function findFile($class)
         return $file;
     }
 
+    /**
+     * Returns the currently registered loaders keyed by their corresponding vendor directories.
+     *
+     * @return array<string, self>
+     */
+    public static function getRegisteredLoaders()
+    {
+        return self::$registeredLoaders;
+    }
+
+    /**
+     * @param  string       $class
+     * @param  string       $ext
+     * @return string|false
+     */
     private function findFileWithExtension($class, $ext)
     {
         // PSR-4 lookup
@@ -432,14 +554,26 @@ private function findFileWithExtension($class, $ext)
 
         return false;
     }
-}
 
-/**
- * Scope isolated include.
- *
- * Prevents access to $this/self from included files.
- */
-function includeFile($file)
-{
-    include $file;
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
+    {
+        if (self::$includeFile !== null) {
+            return;
+        }
+
+        /**
+         * Scope isolated include.
+         *
+         * Prevents access to $this/self from included files.
+         *
+         * @param  string $file
+         * @return void
+         */
+        self::$includeFile = \Closure::bind(static function($file) {
+            include $file;
+        }, null, null);
+    }
 }
diff --git a/Resources/Private/Php/Libraries/vendor/composer/InstalledVersions.php b/Resources/Private/Php/Libraries/vendor/composer/InstalledVersions.php
index 7258420..51e734a 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/InstalledVersions.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/InstalledVersions.php
@@ -1,228 +1,359 @@
 <?php
 
-
-
-
-
-
-
-
-
-
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Composer;
 
+use Composer\Autoload\ClassLoader;
 use Composer\Semver\VersionParser;
 
-
-
-
-
-
+/**
+ * This class is copied in every Composer installed project and available to all
+ *
+ * See also https://getcomposer.org/doc/07-runtime.md#installed-versions
+ *
+ * To require its presence, you can require `composer-runtime-api ^2.0`
+ *
+ * @final
+ */
 class InstalledVersions
 {
-private static $installed = array (
-  'root' => 
-  array (
-    'pretty_version' => 'dev-main',
-    'version' => 'dev-main',
-    'aliases' => 
-    array (
-    ),
-    'reference' => 'f75ad348ed0aae7ea848837a680ce523b0eeeb78',
-    'name' => '__root__',
-  ),
-  'versions' => 
-  array (
-    '__root__' => 
-    array (
-      'pretty_version' => 'dev-main',
-      'version' => 'dev-main',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'f75ad348ed0aae7ea848837a680ce523b0eeeb78',
-    ),
-    'ezyang/htmlpurifier' => 
-    array (
-      'pretty_version' => 'v4.13.0',
-      'version' => '4.13.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '08e27c97e4c6ed02f37c5b2b20488046c8d90d75',
-    ),
-  ),
-);
-
-
-
-
-
-
-
-public static function getInstalledPackages()
-{
-return array_keys(self::$installed['versions']);
-}
-
-
-
-
-
-
-
-
-
-public static function isInstalled($packageName)
-{
-return isset(self::$installed['versions'][$packageName]);
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-public static function satisfies(VersionParser $parser, $packageName, $constraint)
-{
-$constraint = $parser->parseConstraints($constraint);
-$provided = $parser->parseConstraints(self::getVersionRanges($packageName));
-
-return $provided->matches($constraint);
-}
-
-
-
-
-
-
-
-
-
-
-public static function getVersionRanges($packageName)
-{
-if (!isset(self::$installed['versions'][$packageName])) {
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-$ranges = array();
-if (isset(self::$installed['versions'][$packageName]['pretty_version'])) {
-$ranges[] = self::$installed['versions'][$packageName]['pretty_version'];
-}
-if (array_key_exists('aliases', self::$installed['versions'][$packageName])) {
-$ranges = array_merge($ranges, self::$installed['versions'][$packageName]['aliases']);
-}
-if (array_key_exists('replaced', self::$installed['versions'][$packageName])) {
-$ranges = array_merge($ranges, self::$installed['versions'][$packageName]['replaced']);
-}
-if (array_key_exists('provided', self::$installed['versions'][$packageName])) {
-$ranges = array_merge($ranges, self::$installed['versions'][$packageName]['provided']);
-}
-
-return implode(' || ', $ranges);
-}
-
-
-
-
-
-public static function getVersion($packageName)
-{
-if (!isset(self::$installed['versions'][$packageName])) {
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-if (!isset(self::$installed['versions'][$packageName]['version'])) {
-return null;
-}
-
-return self::$installed['versions'][$packageName]['version'];
-}
-
-
-
-
-
-public static function getPrettyVersion($packageName)
-{
-if (!isset(self::$installed['versions'][$packageName])) {
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-if (!isset(self::$installed['versions'][$packageName]['pretty_version'])) {
-return null;
-}
-
-return self::$installed['versions'][$packageName]['pretty_version'];
-}
-
-
-
-
-
-public static function getReference($packageName)
-{
-if (!isset(self::$installed['versions'][$packageName])) {
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-if (!isset(self::$installed['versions'][$packageName]['reference'])) {
-return null;
-}
-
-return self::$installed['versions'][$packageName]['reference'];
-}
-
-
-
-
-
-public static function getRootPackage()
-{
-return self::$installed['root'];
-}
-
-
-
-
-
-
-
-public static function getRawData()
-{
-return self::$installed;
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-public static function reload($data)
-{
-self::$installed = $data;
-}
+    /**
+     * @var mixed[]|null
+     * @psalm-var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}|array{}|null
+     */
+    private static $installed;
+
+    /**
+     * @var bool|null
+     */
+    private static $canGetVendors;
+
+    /**
+     * @var array[]
+     * @psalm-var array<string, array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}>
+     */
+    private static $installedByVendor = array();
+
+    /**
+     * Returns a list of all package names which are present, either by being installed, replaced or provided
+     *
+     * @return string[]
+     * @psalm-return list<string>
+     */
+    public static function getInstalledPackages()
+    {
+        $packages = array();
+        foreach (self::getInstalled() as $installed) {
+            $packages[] = array_keys($installed['versions']);
+        }
+
+        if (1 === \count($packages)) {
+            return $packages[0];
+        }
+
+        return array_keys(array_flip(\call_user_func_array('array_merge', $packages)));
+    }
+
+    /**
+     * Returns a list of all package names with a specific type e.g. 'library'
+     *
+     * @param  string   $type
+     * @return string[]
+     * @psalm-return list<string>
+     */
+    public static function getInstalledPackagesByType($type)
+    {
+        $packagesByType = array();
+
+        foreach (self::getInstalled() as $installed) {
+            foreach ($installed['versions'] as $name => $package) {
+                if (isset($package['type']) && $package['type'] === $type) {
+                    $packagesByType[] = $name;
+                }
+            }
+        }
+
+        return $packagesByType;
+    }
+
+    /**
+     * Checks whether the given package is installed
+     *
+     * This also returns true if the package name is provided or replaced by another package
+     *
+     * @param  string $packageName
+     * @param  bool   $includeDevRequirements
+     * @return bool
+     */
+    public static function isInstalled($packageName, $includeDevRequirements = true)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (isset($installed['versions'][$packageName])) {
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Checks whether the given package satisfies a version constraint
+     *
+     * e.g. If you want to know whether version 2.3+ of package foo/bar is installed, you would call:
+     *
+     *   Composer\InstalledVersions::satisfies(new VersionParser, 'foo/bar', '^2.3')
+     *
+     * @param  VersionParser $parser      Install composer/semver to have access to this class and functionality
+     * @param  string        $packageName
+     * @param  string|null   $constraint  A version constraint to check for, if you pass one you have to make sure composer/semver is required by your package
+     * @return bool
+     */
+    public static function satisfies(VersionParser $parser, $packageName, $constraint)
+    {
+        $constraint = $parser->parseConstraints((string) $constraint);
+        $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
+
+        return $provided->matches($constraint);
+    }
+
+    /**
+     * Returns a version constraint representing all the range(s) which are installed for a given package
+     *
+     * It is easier to use this via isInstalled() with the $constraint argument if you need to check
+     * whether a given version of a package is installed, and not just whether it exists
+     *
+     * @param  string $packageName
+     * @return string Version constraint usable with composer/semver
+     */
+    public static function getVersionRanges($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            $ranges = array();
+            if (isset($installed['versions'][$packageName]['pretty_version'])) {
+                $ranges[] = $installed['versions'][$packageName]['pretty_version'];
+            }
+            if (array_key_exists('aliases', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['aliases']);
+            }
+            if (array_key_exists('replaced', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['replaced']);
+            }
+            if (array_key_exists('provided', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['provided']);
+            }
+
+            return implode(' || ', $ranges);
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
+     */
+    public static function getVersion($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['version'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
+     */
+    public static function getPrettyVersion($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['pretty_version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['pretty_version'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as reference
+     */
+    public static function getReference($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['reference'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['reference'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as install path. Packages of type metapackages also have a null install path.
+     */
+    public static function getInstallPath($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            return isset($installed['versions'][$packageName]['install_path']) ? $installed['versions'][$packageName]['install_path'] : null;
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @return array
+     * @psalm-return array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}
+     */
+    public static function getRootPackage()
+    {
+        $installed = self::getInstalled();
+
+        return $installed[0]['root'];
+    }
+
+    /**
+     * Returns the raw installed.php data for custom implementations
+     *
+     * @deprecated Use getAllRawData() instead which returns all datasets for all autoloaders present in the process. getRawData only returns the first dataset loaded, which may not be what you expect.
+     * @return array[]
+     * @psalm-return array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}
+     */
+    public static function getRawData()
+    {
+        @trigger_error('getRawData only returns the first dataset loaded, which may not be what you expect. Use getAllRawData() instead which returns all datasets for all autoloaders present in the process.', E_USER_DEPRECATED);
+
+        if (null === self::$installed) {
+            // only require the installed.php file if this file is loaded from its dumped location,
+            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
+            if (substr(__DIR__, -8, 1) !== 'C') {
+                self::$installed = include __DIR__ . '/installed.php';
+            } else {
+                self::$installed = array();
+            }
+        }
+
+        return self::$installed;
+    }
+
+    /**
+     * Returns the raw data of all installed.php which are currently loaded for custom implementations
+     *
+     * @return array[]
+     * @psalm-return list<array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}>
+     */
+    public static function getAllRawData()
+    {
+        return self::getInstalled();
+    }
+
+    /**
+     * Lets you reload the static array from another file
+     *
+     * This is only useful for complex integrations in which a project needs to use
+     * this class but then also needs to execute another project's autoloader in process,
+     * and wants to ensure both projects have access to their version of installed.php.
+     *
+     * A typical case would be PHPUnit, where it would need to make sure it reads all
+     * the data it needs from this class, then call reload() with
+     * `require $CWD/vendor/composer/installed.php` (or similar) as input to make sure
+     * the project in which it runs can then also use this class safely, without
+     * interference between PHPUnit's dependencies and the project's dependencies.
+     *
+     * @param  array[] $data A vendor/composer/installed.php data set
+     * @return void
+     *
+     * @psalm-param array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $data
+     */
+    public static function reload($data)
+    {
+        self::$installed = $data;
+        self::$installedByVendor = array();
+    }
+
+    /**
+     * @return array[]
+     * @psalm-return list<array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}>
+     */
+    private static function getInstalled()
+    {
+        if (null === self::$canGetVendors) {
+            self::$canGetVendors = method_exists('Composer\Autoload\ClassLoader', 'getRegisteredLoaders');
+        }
+
+        $installed = array();
+
+        if (self::$canGetVendors) {
+            foreach (ClassLoader::getRegisteredLoaders() as $vendorDir => $loader) {
+                if (isset(self::$installedByVendor[$vendorDir])) {
+                    $installed[] = self::$installedByVendor[$vendorDir];
+                } elseif (is_file($vendorDir.'/composer/installed.php')) {
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
+                    if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
+                        self::$installed = $installed[count($installed) - 1];
+                    }
+                }
+            }
+        }
+
+        if (null === self::$installed) {
+            // only require the installed.php file if this file is loaded from its dumped location,
+            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
+            if (substr(__DIR__, -8, 1) !== 'C') {
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
+            } else {
+                self::$installed = array();
+            }
+        }
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
+
+        return $installed;
+    }
 }
diff --git a/Resources/Private/Php/Libraries/vendor/composer/autoload_classmap.php b/Resources/Private/Php/Libraries/vendor/composer/autoload_classmap.php
index a813eb5..4b95252 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/autoload_classmap.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/autoload_classmap.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
@@ -36,6 +36,7 @@
     'HTMLPurifier_AttrDef_HTML_Bool' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Bool.php',
     'HTMLPurifier_AttrDef_HTML_Class' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Class.php',
     'HTMLPurifier_AttrDef_HTML_Color' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Color.php',
+    'HTMLPurifier_AttrDef_HTML_ContentEditable' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ContentEditable.php',
     'HTMLPurifier_AttrDef_HTML_FrameTarget' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/FrameTarget.php',
     'HTMLPurifier_AttrDef_HTML_ID' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ID.php',
     'HTMLPurifier_AttrDef_HTML_Length' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Length.php',
diff --git a/Resources/Private/Php/Libraries/vendor/composer/autoload_files.php b/Resources/Private/Php/Libraries/vendor/composer/autoload_files.php
index c25686b..0a2315f 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/autoload_files.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/autoload_files.php
@@ -2,7 +2,7 @@
 
 // autoload_files.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/Resources/Private/Php/Libraries/vendor/composer/autoload_namespaces.php b/Resources/Private/Php/Libraries/vendor/composer/autoload_namespaces.php
index 1ee7a39..e60f352 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/autoload_namespaces.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/autoload_namespaces.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/Resources/Private/Php/Libraries/vendor/composer/autoload_psr4.php b/Resources/Private/Php/Libraries/vendor/composer/autoload_psr4.php
index b265c64..3890ddc 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/autoload_psr4.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/autoload_psr4.php
@@ -2,7 +2,7 @@
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/Resources/Private/Php/Libraries/vendor/composer/autoload_real.php b/Resources/Private/Php/Libraries/vendor/composer/autoload_real.php
index 5f15732..b697300 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/autoload_real.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/autoload_real.php
@@ -25,42 +25,27 @@ public static function getLoader()
         require __DIR__ . '/platform_check.php';
 
         spl_autoload_register(array('ComposerAutoloaderInit800730d4b04101d2d87884a83e898900', 'loadClassLoader'), true, false);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(__DIR__));
         spl_autoload_unregister(array('ComposerAutoloaderInit800730d4b04101d2d87884a83e898900', 'loadClassLoader'));
 
-        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
-        if ($useStaticLoader) {
-            require __DIR__ . '/autoload_static.php';
-
-            call_user_func(\Composer\Autoload\ComposerStaticInit800730d4b04101d2d87884a83e898900::getInitializer($loader));
-        } else {
-            $classMap = require __DIR__ . '/autoload_classmap.php';
-            if ($classMap) {
-                $loader->addClassMap($classMap);
-            }
-        }
+        require __DIR__ . '/autoload_static.php';
+        call_user_func(\Composer\Autoload\ComposerStaticInit800730d4b04101d2d87884a83e898900::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(false);
 
-        if ($useStaticLoader) {
-            $includeFiles = Composer\Autoload\ComposerStaticInit800730d4b04101d2d87884a83e898900::$files;
-        } else {
-            $includeFiles = require __DIR__ . '/autoload_files.php';
-        }
-        foreach ($includeFiles as $fileIdentifier => $file) {
-            composerRequire800730d4b04101d2d87884a83e898900($fileIdentifier, $file);
+        $filesToLoad = \Composer\Autoload\ComposerStaticInit800730d4b04101d2d87884a83e898900::$files;
+        $requireFile = \Closure::bind(static function ($fileIdentifier, $file) {
+            if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
+                $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
+
+                require $file;
+            }
+        }, null, null);
+        foreach ($filesToLoad as $fileIdentifier => $file) {
+            $requireFile($fileIdentifier, $file);
         }
 
         return $loader;
     }
 }
-
-function composerRequire800730d4b04101d2d87884a83e898900($fileIdentifier, $file)
-{
-    if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
-        require $file;
-
-        $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
-    }
-}
diff --git a/Resources/Private/Php/Libraries/vendor/composer/autoload_static.php b/Resources/Private/Php/Libraries/vendor/composer/autoload_static.php
index 5cd03ab..131c7df 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/autoload_static.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/autoload_static.php
@@ -51,6 +51,7 @@ class ComposerStaticInit800730d4b04101d2d87884a83e898900
         'HTMLPurifier_AttrDef_HTML_Bool' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Bool.php',
         'HTMLPurifier_AttrDef_HTML_Class' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Class.php',
         'HTMLPurifier_AttrDef_HTML_Color' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Color.php',
+        'HTMLPurifier_AttrDef_HTML_ContentEditable' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ContentEditable.php',
         'HTMLPurifier_AttrDef_HTML_FrameTarget' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/FrameTarget.php',
         'HTMLPurifier_AttrDef_HTML_ID' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ID.php',
         'HTMLPurifier_AttrDef_HTML_Length' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Length.php',
diff --git a/Resources/Private/Php/Libraries/vendor/composer/installed.json b/Resources/Private/Php/Libraries/vendor/composer/installed.json
index b975421..33a8389 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/installed.json
+++ b/Resources/Private/Php/Libraries/vendor/composer/installed.json
@@ -2,35 +2,42 @@
     "packages": [
         {
             "name": "ezyang/htmlpurifier",
-            "version": "v4.13.0",
-            "version_normalized": "4.13.0.0",
+            "version": "v4.17.0",
+            "version_normalized": "4.17.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/ezyang/htmlpurifier.git",
-                "reference": "08e27c97e4c6ed02f37c5b2b20488046c8d90d75"
+                "reference": "bbc513d79acf6691fa9cf10f192c90dd2957f18c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/08e27c97e4c6ed02f37c5b2b20488046c8d90d75",
-                "reference": "08e27c97e4c6ed02f37c5b2b20488046c8d90d75",
+                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/bbc513d79acf6691fa9cf10f192c90dd2957f18c",
+                "reference": "bbc513d79acf6691fa9cf10f192c90dd2957f18c",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.2"
+                "php": "~5.6.0 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0"
             },
             "require-dev": {
-                "simpletest/simpletest": "dev-master#72de02a7b80c6bb8864ef9bf66d41d2f58f826bd"
+                "cerdic/css-tidy": "^1.7 || ^2.0",
+                "simpletest/simpletest": "dev-master"
             },
-            "time": "2020-06-29T00:56:53+00:00",
+            "suggest": {
+                "cerdic/css-tidy": "If you want to use the filter 'Filter.ExtractStyleBlocks'.",
+                "ext-bcmath": "Used for unit conversion and imagecrash protection",
+                "ext-iconv": "Converts text to and from non-UTF-8 encodings",
+                "ext-tidy": "Used for pretty-printing HTML"
+            },
+            "time": "2023-11-17T15:01:25+00:00",
             "type": "library",
             "installation-source": "dist",
             "autoload": {
-                "psr-0": {
-                    "HTMLPurifier": "library/"
-                },
                 "files": [
                     "library/HTMLPurifier.composer.php"
                 ],
+                "psr-0": {
+                    "HTMLPurifier": "library/"
+                },
                 "exclude-from-classmap": [
                     "/library/HTMLPurifier/Language/"
                 ]
@@ -53,7 +60,7 @@
             ],
             "support": {
                 "issues": "https://github.com/ezyang/htmlpurifier/issues",
-                "source": "https://github.com/ezyang/htmlpurifier/tree/master"
+                "source": "https://github.com/ezyang/htmlpurifier/tree/v4.17.0"
             },
             "install-path": "../ezyang/htmlpurifier"
         }
diff --git a/Resources/Private/Php/Libraries/vendor/composer/installed.php b/Resources/Private/Php/Libraries/vendor/composer/installed.php
index 67a94ea..d5ee59a 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/installed.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/installed.php
@@ -1,33 +1,32 @@
-<?php return array (
-  'root' => 
-  array (
-    'pretty_version' => 'dev-main',
-    'version' => 'dev-main',
-    'aliases' => 
-    array (
+<?php return array(
+    'root' => array(
+        'name' => '__root__',
+        'pretty_version' => 'dev-main',
+        'version' => 'dev-main',
+        'reference' => '5e5fd83e22b056705c49d4556933e79e1d4f20fb',
+        'type' => 'library',
+        'install_path' => __DIR__ . '/../../',
+        'aliases' => array(),
+        'dev' => true,
     ),
-    'reference' => 'f75ad348ed0aae7ea848837a680ce523b0eeeb78',
-    'name' => '__root__',
-  ),
-  'versions' => 
-  array (
-    '__root__' => 
-    array (
-      'pretty_version' => 'dev-main',
-      'version' => 'dev-main',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'f75ad348ed0aae7ea848837a680ce523b0eeeb78',
+    'versions' => array(
+        '__root__' => array(
+            'pretty_version' => 'dev-main',
+            'version' => 'dev-main',
+            'reference' => '5e5fd83e22b056705c49d4556933e79e1d4f20fb',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../../',
+            'aliases' => array(),
+            'dev_requirement' => false,
+        ),
+        'ezyang/htmlpurifier' => array(
+            'pretty_version' => 'v4.17.0',
+            'version' => '4.17.0.0',
+            'reference' => 'bbc513d79acf6691fa9cf10f192c90dd2957f18c',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../ezyang/htmlpurifier',
+            'aliases' => array(),
+            'dev_requirement' => false,
+        ),
     ),
-    'ezyang/htmlpurifier' => 
-    array (
-      'pretty_version' => 'v4.13.0',
-      'version' => '4.13.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '08e27c97e4c6ed02f37c5b2b20488046c8d90d75',
-    ),
-  ),
 );
diff --git a/Resources/Private/Php/Libraries/vendor/composer/platform_check.php b/Resources/Private/Php/Libraries/vendor/composer/platform_check.php
index 201e2fc..8b379f4 100644
--- a/Resources/Private/Php/Libraries/vendor/composer/platform_check.php
+++ b/Resources/Private/Php/Libraries/vendor/composer/platform_check.php
@@ -4,8 +4,8 @@
 
 $issues = array();
 
-if (!(PHP_VERSION_ID >= 50200)) {
-    $issues[] = 'Your Composer dependencies require a PHP version ">= 5.2.0". You are running ' . PHP_VERSION . '.';
+if (!(PHP_VERSION_ID >= 50600)) {
+    $issues[] = 'Your Composer dependencies require a PHP version ">= 5.6.0". You are running ' . PHP_VERSION . '.';
 }
 
 if ($issues) {
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/README.md b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/README.md
index 9e0becc..e6b7199 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/README.md
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/README.md
@@ -1,4 +1,4 @@
-HTML Purifier [![Build Status](https://secure.travis-ci.org/ezyang/htmlpurifier.svg?branch=master)](http://travis-ci.org/ezyang/htmlpurifier)
+HTML Purifier [![Build Status](https://github.com/ezyang/htmlpurifier/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/ezyang/htmlpurifier/actions/workflows/ci.yml)
 =============
 
 HTML Purifier is an HTML filtering solution that uses a unique combination
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/VERSION b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/VERSION
index 01b73ab..8643e72 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/VERSION
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/VERSION
@@ -1 +1 @@
-4.13.0
\ No newline at end of file
+4.17.0
\ No newline at end of file
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/composer.json b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/composer.json
index 0ff86b5..ed46bd5 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/composer.json
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/composer.json
@@ -13,10 +13,11 @@
         }
     ],
     "require": {
-        "php": ">=5.2"
+        "php": "~5.6.0 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0"
     },
     "require-dev": {
-        "simpletest/simpletest": "dev-master#72de02a7b80c6bb8864ef9bf66d41d2f58f826bd"
+        "cerdic/css-tidy": "^1.7 || ^2.0",
+        "simpletest/simpletest": "dev-master"
     },
     "autoload": {
         "psr-0": { "HTMLPurifier": "library/" },
@@ -24,5 +25,21 @@
         "exclude-from-classmap": [
             "/library/HTMLPurifier/Language/"
         ]
-    }
+    },
+    "suggest": {
+        "cerdic/css-tidy": "If you want to use the filter 'Filter.ExtractStyleBlocks'.",
+        "ext-iconv": "Converts text to and from non-UTF-8 encodings",
+        "ext-bcmath": "Used for unit conversion and imagecrash protection",
+        "ext-tidy": "Used for pretty-printing HTML"
+    },
+    "config": {
+        "sort-packages": true
+    },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/ezyang/simpletest.git",
+            "no-api": true
+        }
+    ]
 }
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload-legacy.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload-legacy.php
index c271cd1..0a17ee4 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload-legacy.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload-legacy.php
@@ -4,12 +4,11 @@
  * @file
  * Legacy autoloader for systems lacking spl_autoload_register
  *
- * Must be separate to prevent deprecation warning on PHP 7.2
  */
 
-function __autoload($class)
+spl_autoload_register(function($class)
 {
-    return HTMLPurifier_Bootstrap::autoload($class);
-}
+     return HTMLPurifier_Bootstrap::autoload($class);
+});
 
 // vim: et sw=4 sts=4
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload.php
index 9d8d299..7a69113 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload.php
@@ -17,6 +17,7 @@
     require dirname(__FILE__) . '/HTMLPurifier.autoload-legacy.php';
 }
 
+// phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.zend_ze1_compatibility_modeRemoved
 if (ini_get('zend.ze1_compatibility_mode')) {
     trigger_error("HTML Purifier is not compatible with zend.ze1_compatibility_mode; please turn it off", E_USER_ERROR);
 }
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.includes.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.includes.php
index 151e675..77ebf2d 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.includes.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.includes.php
@@ -7,7 +7,7 @@
  * primary concern and you are using an opcode cache. PLEASE DO NOT EDIT THIS
  * FILE, changes will be overwritten the next time the script is run.
  *
- * @version 4.13.0
+ * @version 4.17.0
  *
  * @warning
  *      You must *not* include any other HTML Purifier files before this file,
@@ -107,6 +107,7 @@
 require 'HTMLPurifier/AttrDef/HTML/Nmtokens.php';
 require 'HTMLPurifier/AttrDef/HTML/Class.php';
 require 'HTMLPurifier/AttrDef/HTML/Color.php';
+require 'HTMLPurifier/AttrDef/HTML/ContentEditable.php';
 require 'HTMLPurifier/AttrDef/HTML/FrameTarget.php';
 require 'HTMLPurifier/AttrDef/HTML/ID.php';
 require 'HTMLPurifier/AttrDef/HTML/Pixels.php';
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.php
index 3c0f8a0..5c14a33 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.php
@@ -19,7 +19,7 @@
  */
 
 /*
-    HTML Purifier 4.13.0 - Standards Compliant HTML Filtering
+    HTML Purifier 4.17.0 - Standards Compliant HTML Filtering
     Copyright (C) 2006-2008 Edward Z. Yang
 
     This library is free software; you can redistribute it and/or
@@ -58,12 +58,12 @@ class HTMLPurifier
      * Version of HTML Purifier.
      * @type string
      */
-    public $version = '4.13.0';
+    public $version = '4.17.0';
 
     /**
      * Constant with version of HTML Purifier.
      */
-    const VERSION = '4.13.0';
+    const VERSION = '4.17.0';
 
     /**
      * Global configuration object.
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.safe-includes.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.safe-includes.php
index a3261f8..94543f5 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.safe-includes.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier.safe-includes.php
@@ -101,6 +101,7 @@
 require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Nmtokens.php';
 require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Class.php';
 require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Color.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/ContentEditable.php';
 require_once $__dir . '/HTMLPurifier/AttrDef/HTML/FrameTarget.php';
 require_once $__dir . '/HTMLPurifier/AttrDef/HTML/ID.php';
 require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Pixels.php';
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Background.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Background.php
index 7f1ea3b..28c4988 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Background.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Background.php
@@ -25,6 +25,7 @@ public function __construct($config)
         $this->info['background-repeat'] = $def->info['background-repeat'];
         $this->info['background-attachment'] = $def->info['background-attachment'];
         $this->info['background-position'] = $def->info['background-position'];
+        $this->info['background-size'] = $def->info['background-size'];
     }
 
     /**
@@ -53,6 +54,7 @@ public function validate($string, $config, $context)
         $caught['repeat'] = false;
         $caught['attachment'] = false;
         $caught['position'] = false;
+        $caught['size'] = false;
 
         $i = 0; // number of catches
 
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/FontFamily.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/FontFamily.php
index 74e24c8..f1ff116 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/FontFamily.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/FontFamily.php
@@ -10,23 +10,21 @@ class HTMLPurifier_AttrDef_CSS_FontFamily extends HTMLPurifier_AttrDef
 
     public function __construct()
     {
-        $this->mask = '_- ';
-        for ($c = 'a'; $c <= 'z'; $c++) {
-            $this->mask .= $c;
-        }
-        for ($c = 'A'; $c <= 'Z'; $c++) {
-            $this->mask .= $c;
-        }
-        for ($c = '0'; $c <= '9'; $c++) {
-            $this->mask .= $c;
-        } // cast-y, but should be fine
-        // special bytes used by UTF-8
-        for ($i = 0x80; $i <= 0xFF; $i++) {
-            // We don't bother excluding invalid bytes in this range,
-            // because the our restriction of well-formed UTF-8 will
-            // prevent these from ever occurring.
-            $this->mask .= chr($i);
-        }
+        // Lowercase letters
+        $l = range('a', 'z');
+        // Uppercase letters
+        $u = range('A', 'Z');
+        // Digits
+        $d = range('0', '9');
+        // Special bytes used by UTF-8
+        $b = array_map('chr', range(0x80, 0xFF));
+        // All valid characters for the mask
+        $c = array_merge($l, $u, $d, $b);
+        // Concatenate all valid characters into a string 
+        // Use '_- ' as an initial value
+        $this->mask = array_reduce($c, function ($carry, $value) {
+            return $carry . $value;
+        }, '_- ');
 
         /*
             PHP's internal strcspn implementation is
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ContentEditable.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ContentEditable.php
new file mode 100644
index 0000000..5b03d3e
--- /dev/null
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ContentEditable.php
@@ -0,0 +1,16 @@
+<?php
+
+class HTMLPurifier_AttrDef_HTML_ContentEditable extends HTMLPurifier_AttrDef
+{
+    public function validate($string, $config, $context)
+    {
+        $allowed = array('false');
+        if ($config->get('HTML.Trusted')) {
+            $allowed = array('', 'true', 'false');
+        }
+
+        $enum = new HTMLPurifier_AttrDef_Enum($allowed);
+
+        return $enum->validate($string, $config, $context);
+    }
+}
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Host.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Host.php
index 1beeaa5..ddc5dfb 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Host.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Host.php
@@ -106,7 +106,7 @@ public function validate($string, $config, $context)
         // If we have Net_IDNA2 support, we can support IRIs by
         // punycoding them. (This is the most portable thing to do,
         // since otherwise we have to assume browsers support
-        } elseif ($config->get('Core.EnableIDNA')) {
+        } elseif ($config->get('Core.EnableIDNA') && class_exists('Net_IDNA2')) {
             $idna = new Net_IDNA2(array('encoding' => 'utf8', 'overlong' => false, 'strict' => true));
             // we need to encode each period separately
             $parts = explode('.', $string);
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/NameSync.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/NameSync.php
index 36079b7..5a1fdbb 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/NameSync.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/NameSync.php
@@ -8,6 +8,11 @@
 class HTMLPurifier_AttrTransform_NameSync extends HTMLPurifier_AttrTransform
 {
 
+    /**
+     * @type HTMLPurifier_AttrDef_HTML_ID
+     */
+    public $idDef;
+
     public function __construct()
     {
         $this->idDef = new HTMLPurifier_AttrDef_HTML_ID();
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/SafeParam.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/SafeParam.php
index 1143b4b..1033106 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/SafeParam.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/SafeParam.php
@@ -24,6 +24,11 @@ class HTMLPurifier_AttrTransform_SafeParam extends HTMLPurifier_AttrTransform
      */
     private $uri;
 
+    /**
+     * @type HTMLPurifier_AttrDef_Enum
+     */
+    public $wmode;
+
     public function __construct()
     {
         $this->uri = new HTMLPurifier_AttrDef_URI(true); // embedded
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/TargetBlank.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/TargetBlank.php
index dd63ea8..cc30ab8 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/TargetBlank.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/TargetBlank.php
@@ -33,7 +33,11 @@ public function transform($attr, $config, $context)
 
         // XXX Kind of inefficient
         $url = $this->parser->parse($attr['href']);
-        $scheme = $url->getSchemeObj($config, $context);
+        
+        // Ignore invalid schemes (e.g. `javascript:`)
+        if (!($scheme = $url->getSchemeObj($config, $context))) {
+            return $attr;
+        }
 
         if ($scheme->browsable && !$url->isBenign($config, $context)) {
             $attr['target'] = '_blank';
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTypes.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTypes.php
index 3b70520..e4429e8 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTypes.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTypes.php
@@ -41,6 +41,7 @@ public function __construct()
         $this->info['IAlign']   = self::makeEnum('top,middle,bottom,left,right');
         $this->info['LAlign']   = self::makeEnum('top,bottom,left,right');
         $this->info['FrameTarget'] = new HTMLPurifier_AttrDef_HTML_FrameTarget();
+        $this->info['ContentEditable'] = new HTMLPurifier_AttrDef_HTML_ContentEditable();
 
         // unimplemented aliases
         $this->info['ContentType'] = new HTMLPurifier_AttrDef_Text();
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Bootstrap.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Bootstrap.php
index 707122b..bd8f998 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Bootstrap.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Bootstrap.php
@@ -79,44 +79,11 @@ public static function getPath($class)
     public static function registerAutoload()
     {
         $autoload = array('HTMLPurifier_Bootstrap', 'autoload');
-        if (($funcs = spl_autoload_functions()) === false) {
+        if (spl_autoload_functions() === false) {
             spl_autoload_register($autoload);
-        } elseif (function_exists('spl_autoload_unregister')) {
-            if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
-                // prepend flag exists, no need for shenanigans
-                spl_autoload_register($autoload, true, true);
-            } else {
-                $buggy  = version_compare(PHP_VERSION, '5.2.11', '<');
-                $compat = version_compare(PHP_VERSION, '5.1.2', '<=') &&
-                          version_compare(PHP_VERSION, '5.1.0', '>=');
-                foreach ($funcs as $func) {
-                    if ($buggy && is_array($func)) {
-                        // :TRICKY: There are some compatibility issues and some
-                        // places where we need to error out
-                        $reflector = new ReflectionMethod($func[0], $func[1]);
-                        if (!$reflector->isStatic()) {
-                            throw new Exception(
-                                'HTML Purifier autoloader registrar is not compatible
-                                with non-static object methods due to PHP Bug #44144;
-                                Please do not use HTMLPurifier.autoload.php (or any
-                                file that includes this file); instead, place the code:
-                                spl_autoload_register(array(\'HTMLPurifier_Bootstrap\', \'autoload\'))
-                                after your own autoloaders.'
-                            );
-                        }
-                        // Suprisingly, spl_autoload_register supports the
-                        // Class::staticMethod callback format, although call_user_func doesn't
-                        if ($compat) {
-                            $func = implode('::', $func);
-                        }
-                    }
-                    spl_autoload_unregister($func);
-                }
-                spl_autoload_register($autoload);
-                foreach ($funcs as $func) {
-                    spl_autoload_register($func);
-                }
-            }
+        } else {
+            // prepend flag exists, no need for shenanigans
+            spl_autoload_register($autoload, true, true);
         }
     }
 }
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/CSSDefinition.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/CSSDefinition.php
index 21f1a58..1bc419c 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/CSSDefinition.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/CSSDefinition.php
@@ -13,7 +13,7 @@ class HTMLPurifier_CSSDefinition extends HTMLPurifier_Definition
      * Assoc array of attribute name to definition object.
      * @type HTMLPurifier_AttrDef[]
      */
-    public $info = array();
+    public $info = [];
 
     /**
      * Constructs the info array.  The meat of this class.
@@ -22,7 +22,7 @@ class HTMLPurifier_CSSDefinition extends HTMLPurifier_Definition
     protected function doSetup($config)
     {
         $this->info['text-align'] = new HTMLPurifier_AttrDef_Enum(
-            array('left', 'right', 'center', 'justify'),
+            ['left', 'right', 'center', 'justify'],
             false
         );
 
@@ -31,7 +31,7 @@ protected function doSetup($config)
             $this->info['border-right-style'] =
             $this->info['border-left-style'] =
             $this->info['border-top-style'] = new HTMLPurifier_AttrDef_Enum(
-                array(
+                [
                     'none',
                     'hidden',
                     'dotted',
@@ -42,42 +42,42 @@ protected function doSetup($config)
                     'ridge',
                     'inset',
                     'outset'
-                ),
+                ],
                 false
             );
 
         $this->info['border-style'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_style);
 
         $this->info['clear'] = new HTMLPurifier_AttrDef_Enum(
-            array('none', 'left', 'right', 'both'),
+            ['none', 'left', 'right', 'both'],
             false
         );
         $this->info['float'] = new HTMLPurifier_AttrDef_Enum(
-            array('none', 'left', 'right'),
+            ['none', 'left', 'right'],
             false
         );
         $this->info['font-style'] = new HTMLPurifier_AttrDef_Enum(
-            array('normal', 'italic', 'oblique'),
+            ['normal', 'italic', 'oblique'],
             false
         );
         $this->info['font-variant'] = new HTMLPurifier_AttrDef_Enum(
-            array('normal', 'small-caps'),
+            ['normal', 'small-caps'],
             false
         );
 
         $uri_or_none = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
-                new HTMLPurifier_AttrDef_Enum(array('none')),
+            [
+                new HTMLPurifier_AttrDef_Enum(['none']),
                 new HTMLPurifier_AttrDef_CSS_URI()
-            )
+            ]
         );
 
         $this->info['list-style-position'] = new HTMLPurifier_AttrDef_Enum(
-            array('inside', 'outside'),
+            ['inside', 'outside'],
             false
         );
         $this->info['list-style-type'] = new HTMLPurifier_AttrDef_Enum(
-            array(
+            [
                 'disc',
                 'circle',
                 'square',
@@ -87,7 +87,7 @@ protected function doSetup($config)
                 'lower-alpha',
                 'upper-alpha',
                 'none'
-            ),
+            ],
             false
         );
         $this->info['list-style-image'] = $uri_or_none;
@@ -95,30 +95,46 @@ protected function doSetup($config)
         $this->info['list-style'] = new HTMLPurifier_AttrDef_CSS_ListStyle($config);
 
         $this->info['text-transform'] = new HTMLPurifier_AttrDef_Enum(
-            array('capitalize', 'uppercase', 'lowercase', 'none'),
+            ['capitalize', 'uppercase', 'lowercase', 'none'],
             false
         );
         $this->info['color'] = new HTMLPurifier_AttrDef_CSS_Color();
 
         $this->info['background-image'] = $uri_or_none;
         $this->info['background-repeat'] = new HTMLPurifier_AttrDef_Enum(
-            array('repeat', 'repeat-x', 'repeat-y', 'no-repeat')
+            ['repeat', 'repeat-x', 'repeat-y', 'no-repeat']
         );
         $this->info['background-attachment'] = new HTMLPurifier_AttrDef_Enum(
-            array('scroll', 'fixed')
+            ['scroll', 'fixed']
         );
         $this->info['background-position'] = new HTMLPurifier_AttrDef_CSS_BackgroundPosition();
 
+        $this->info['background-size'] = new HTMLPurifier_AttrDef_CSS_Composite(
+            [
+                new HTMLPurifier_AttrDef_Enum(
+                    [
+                        'auto',
+                        'cover',
+                        'contain',
+                        'initial',
+                        'inherit',
+                    ]
+                ),
+                new HTMLPurifier_AttrDef_CSS_Percentage(),
+                new HTMLPurifier_AttrDef_CSS_Length()
+            ]
+        );
+
         $border_color =
             $this->info['border-top-color'] =
             $this->info['border-bottom-color'] =
             $this->info['border-left-color'] =
             $this->info['border-right-color'] =
             $this->info['background-color'] = new HTMLPurifier_AttrDef_CSS_Composite(
-                array(
-                    new HTMLPurifier_AttrDef_Enum(array('transparent')),
+                [
+                    new HTMLPurifier_AttrDef_Enum(['transparent']),
                     new HTMLPurifier_AttrDef_CSS_Color()
-                )
+                ]
             );
 
         $this->info['background'] = new HTMLPurifier_AttrDef_CSS_Background($config);
@@ -130,32 +146,32 @@ protected function doSetup($config)
             $this->info['border-bottom-width'] =
             $this->info['border-left-width'] =
             $this->info['border-right-width'] = new HTMLPurifier_AttrDef_CSS_Composite(
-                array(
-                    new HTMLPurifier_AttrDef_Enum(array('thin', 'medium', 'thick')),
+                [
+                    new HTMLPurifier_AttrDef_Enum(['thin', 'medium', 'thick']),
                     new HTMLPurifier_AttrDef_CSS_Length('0') //disallow negative
-                )
+                ]
             );
 
         $this->info['border-width'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_width);
 
         $this->info['letter-spacing'] = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
-                new HTMLPurifier_AttrDef_Enum(array('normal')),
+            [
+                new HTMLPurifier_AttrDef_Enum(['normal']),
                 new HTMLPurifier_AttrDef_CSS_Length()
-            )
+            ]
         );
 
         $this->info['word-spacing'] = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
-                new HTMLPurifier_AttrDef_Enum(array('normal')),
+            [
+                new HTMLPurifier_AttrDef_Enum(['normal']),
                 new HTMLPurifier_AttrDef_CSS_Length()
-            )
+            ]
         );
 
         $this->info['font-size'] = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
+            [
                 new HTMLPurifier_AttrDef_Enum(
-                    array(
+                    [
                         'xx-small',
                         'x-small',
                         'small',
@@ -165,20 +181,20 @@ protected function doSetup($config)
                         'xx-large',
                         'larger',
                         'smaller'
-                    )
+                    ]
                 ),
                 new HTMLPurifier_AttrDef_CSS_Percentage(),
                 new HTMLPurifier_AttrDef_CSS_Length()
-            )
+            ]
         );
 
         $this->info['line-height'] = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
-                new HTMLPurifier_AttrDef_Enum(array('normal')),
+            [
+                new HTMLPurifier_AttrDef_Enum(['normal']),
                 new HTMLPurifier_AttrDef_CSS_Number(true), // no negatives
                 new HTMLPurifier_AttrDef_CSS_Length('0'),
                 new HTMLPurifier_AttrDef_CSS_Percentage(true)
-            )
+            ]
         );
 
         $margin =
@@ -186,11 +202,11 @@ protected function doSetup($config)
             $this->info['margin-bottom'] =
             $this->info['margin-left'] =
             $this->info['margin-right'] = new HTMLPurifier_AttrDef_CSS_Composite(
-                array(
+                [
                     new HTMLPurifier_AttrDef_CSS_Length(),
                     new HTMLPurifier_AttrDef_CSS_Percentage(),
-                    new HTMLPurifier_AttrDef_Enum(array('auto'))
-                )
+                    new HTMLPurifier_AttrDef_Enum(['auto'])
+                ]
             );
 
         $this->info['margin'] = new HTMLPurifier_AttrDef_CSS_Multiple($margin);
@@ -201,41 +217,41 @@ protected function doSetup($config)
             $this->info['padding-bottom'] =
             $this->info['padding-left'] =
             $this->info['padding-right'] = new HTMLPurifier_AttrDef_CSS_Composite(
-                array(
+                [
                     new HTMLPurifier_AttrDef_CSS_Length('0'),
                     new HTMLPurifier_AttrDef_CSS_Percentage(true)
-                )
+                ]
             );
 
         $this->info['padding'] = new HTMLPurifier_AttrDef_CSS_Multiple($padding);
 
         $this->info['text-indent'] = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
+            [
                 new HTMLPurifier_AttrDef_CSS_Length(),
                 new HTMLPurifier_AttrDef_CSS_Percentage()
-            )
+            ]
         );
 
         $trusted_wh = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
+            [
                 new HTMLPurifier_AttrDef_CSS_Length('0'),
                 new HTMLPurifier_AttrDef_CSS_Percentage(true),
-                new HTMLPurifier_AttrDef_Enum(array('auto', 'initial', 'inherit'))
-            )
+                new HTMLPurifier_AttrDef_Enum(['auto', 'initial', 'inherit'])
+            ]
         );
         $trusted_min_wh = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
+            [
                 new HTMLPurifier_AttrDef_CSS_Length('0'),
                 new HTMLPurifier_AttrDef_CSS_Percentage(true),
-                new HTMLPurifier_AttrDef_Enum(array('initial', 'inherit'))
-            )
+                new HTMLPurifier_AttrDef_Enum(['initial', 'inherit'])
+            ]
         );
         $trusted_max_wh = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
+            [
                 new HTMLPurifier_AttrDef_CSS_Length('0'),
                 new HTMLPurifier_AttrDef_CSS_Percentage(true),
-                new HTMLPurifier_AttrDef_Enum(array('none', 'initial', 'inherit'))
-            )
+                new HTMLPurifier_AttrDef_Enum(['none', 'initial', 'inherit'])
+            ]
         );
         $max = $config->get('CSS.MaxImgLength');
 
@@ -247,10 +263,10 @@ protected function doSetup($config)
                     'img',
                     // For img tags:
                     new HTMLPurifier_AttrDef_CSS_Composite(
-                        array(
+                        [
                             new HTMLPurifier_AttrDef_CSS_Length('0', $max),
-                            new HTMLPurifier_AttrDef_Enum(array('auto'))
-                        )
+                            new HTMLPurifier_AttrDef_Enum(['auto'])
+                        ]
                     ),
                     // For everyone else:
                     $trusted_wh
@@ -263,10 +279,10 @@ protected function doSetup($config)
                     'img',
                     // For img tags:
                     new HTMLPurifier_AttrDef_CSS_Composite(
-                        array(
+                        [
                             new HTMLPurifier_AttrDef_CSS_Length('0', $max),
-                            new HTMLPurifier_AttrDef_Enum(array('initial', 'inherit'))
-                        )
+                            new HTMLPurifier_AttrDef_Enum(['initial', 'inherit'])
+                        ]
                     ),
                     // For everyone else:
                     $trusted_min_wh
@@ -279,22 +295,39 @@ protected function doSetup($config)
                     'img',
                     // For img tags:
                     new HTMLPurifier_AttrDef_CSS_Composite(
-                        array(
+                        [
                             new HTMLPurifier_AttrDef_CSS_Length('0', $max),
-                            new HTMLPurifier_AttrDef_Enum(array('none', 'initial', 'inherit'))
-                        )
+                            new HTMLPurifier_AttrDef_Enum(['none', 'initial', 'inherit'])
+                        ]
                     ),
                     // For everyone else:
                     $trusted_max_wh
                 );
 
+        // text-decoration and related shorthands
         $this->info['text-decoration'] = new HTMLPurifier_AttrDef_CSS_TextDecoration();
 
+        $this->info['text-decoration-line'] = new HTMLPurifier_AttrDef_Enum(
+            ['none', 'underline', 'overline', 'line-through', 'initial', 'inherit']
+        );
+
+        $this->info['text-decoration-style'] = new HTMLPurifier_AttrDef_Enum(
+            ['solid', 'double', 'dotted', 'dashed', 'wavy', 'initial', 'inherit']
+        );
+
+        $this->info['text-decoration-color'] = new HTMLPurifier_AttrDef_CSS_Color();
+
+        $this->info['text-decoration-thickness'] = new HTMLPurifier_AttrDef_CSS_Composite([
+            new HTMLPurifier_AttrDef_CSS_Length(),
+            new HTMLPurifier_AttrDef_CSS_Percentage(),
+            new HTMLPurifier_AttrDef_Enum(['auto', 'from-font', 'initial', 'inherit'])
+        ]);
+
         $this->info['font-family'] = new HTMLPurifier_AttrDef_CSS_FontFamily();
 
         // this could use specialized code
         $this->info['font-weight'] = new HTMLPurifier_AttrDef_Enum(
-            array(
+            [
                 'normal',
                 'bold',
                 'bolder',
@@ -308,7 +341,7 @@ protected function doSetup($config)
                 '700',
                 '800',
                 '900'
-            ),
+            ],
             false
         );
 
@@ -324,21 +357,21 @@ protected function doSetup($config)
         $this->info['border-right'] = new HTMLPurifier_AttrDef_CSS_Border($config);
 
         $this->info['border-collapse'] = new HTMLPurifier_AttrDef_Enum(
-            array('collapse', 'separate')
+            ['collapse', 'separate']
         );
 
         $this->info['caption-side'] = new HTMLPurifier_AttrDef_Enum(
-            array('top', 'bottom')
+            ['top', 'bottom']
         );
 
         $this->info['table-layout'] = new HTMLPurifier_AttrDef_Enum(
-            array('auto', 'fixed')
+            ['auto', 'fixed']
         );
 
         $this->info['vertical-align'] = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
+            [
                 new HTMLPurifier_AttrDef_Enum(
-                    array(
+                    [
                         'baseline',
                         'sub',
                         'super',
@@ -347,11 +380,11 @@ protected function doSetup($config)
                         'middle',
                         'bottom',
                         'text-bottom'
-                    )
+                    ]
                 ),
                 new HTMLPurifier_AttrDef_CSS_Length(),
                 new HTMLPurifier_AttrDef_CSS_Percentage()
-            )
+            ]
         );
 
         $this->info['border-spacing'] = new HTMLPurifier_AttrDef_CSS_Multiple(new HTMLPurifier_AttrDef_CSS_Length(), 2);
@@ -359,7 +392,7 @@ protected function doSetup($config)
         // These CSS properties don't work on many browsers, but we live
         // in THE FUTURE!
         $this->info['white-space'] = new HTMLPurifier_AttrDef_Enum(
-            array('nowrap', 'normal', 'pre', 'pre-wrap', 'pre-line')
+            ['nowrap', 'normal', 'pre', 'pre-wrap', 'pre-line']
         );
 
         if ($config->get('CSS.Proprietary')) {
@@ -406,21 +439,21 @@ protected function doSetupProprietary($config)
         // more CSS3
         $this->info['page-break-after'] =
         $this->info['page-break-before'] = new HTMLPurifier_AttrDef_Enum(
-            array(
+            [
                 'auto',
                 'always',
                 'avoid',
                 'left',
                 'right'
-            )
+            ]
         );
-        $this->info['page-break-inside'] = new HTMLPurifier_AttrDef_Enum(array('auto', 'avoid'));
+        $this->info['page-break-inside'] = new HTMLPurifier_AttrDef_Enum(['auto', 'avoid']);
 
         $border_radius = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
+            [
                 new HTMLPurifier_AttrDef_CSS_Percentage(true), // disallow negative
                 new HTMLPurifier_AttrDef_CSS_Length('0') // disallow negative
-            ));
+            ]);
 
         $this->info['border-top-left-radius'] =
         $this->info['border-top-right-radius'] =
@@ -437,7 +470,7 @@ protected function doSetupProprietary($config)
     protected function doSetupTricky($config)
     {
         $this->info['display'] = new HTMLPurifier_AttrDef_Enum(
-            array(
+            [
                 'inline',
                 'block',
                 'list-item',
@@ -456,12 +489,12 @@ protected function doSetupTricky($config)
                 'table-cell',
                 'table-caption',
                 'none'
-            )
+            ]
         );
         $this->info['visibility'] = new HTMLPurifier_AttrDef_Enum(
-            array('visible', 'hidden', 'collapse')
+            ['visible', 'hidden', 'collapse']
         );
-        $this->info['overflow'] = new HTMLPurifier_AttrDef_Enum(array('visible', 'hidden', 'auto', 'scroll'));
+        $this->info['overflow'] = new HTMLPurifier_AttrDef_Enum(['visible', 'hidden', 'auto', 'scroll']);
         $this->info['opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
     }
 
@@ -471,23 +504,23 @@ protected function doSetupTricky($config)
     protected function doSetupTrusted($config)
     {
         $this->info['position'] = new HTMLPurifier_AttrDef_Enum(
-            array('static', 'relative', 'absolute', 'fixed')
+            ['static', 'relative', 'absolute', 'fixed']
         );
         $this->info['top'] =
         $this->info['left'] =
         $this->info['right'] =
         $this->info['bottom'] = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
+            [
                 new HTMLPurifier_AttrDef_CSS_Length(),
                 new HTMLPurifier_AttrDef_CSS_Percentage(),
-                new HTMLPurifier_AttrDef_Enum(array('auto')),
-            )
+                new HTMLPurifier_AttrDef_Enum(['auto']),
+            ]
         );
         $this->info['z-index'] = new HTMLPurifier_AttrDef_CSS_Composite(
-            array(
+            [
                 new HTMLPurifier_AttrDef_Integer(),
-                new HTMLPurifier_AttrDef_Enum(array('auto')),
-            )
+                new HTMLPurifier_AttrDef_Enum(['auto']),
+            ]
         );
     }
 
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/List.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/List.php
index 4fc70e0..3d584e7 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/List.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/List.php
@@ -22,6 +22,8 @@ class HTMLPurifier_ChildDef_List extends HTMLPurifier_ChildDef
     // XXX: This whole business with 'wrap' is all a bit unsatisfactory
     public $elements = array('li' => true, 'ul' => true, 'ol' => true);
 
+    public $whitespace;
+
     /**
      * @param array $children
      * @param HTMLPurifier_Config $config
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/Table.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/Table.php
index cb6b3e6..67c7e95 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/Table.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/Table.php
@@ -164,7 +164,7 @@ public function validateChildren($children, $config, $context)
             }
         }
 
-        if (empty($content)) {
+        if (empty($content) && $thead === false && $tfoot === false) {
             return false;
         }
 
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Config.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Config.php
index 3133d8a..f7511ca 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Config.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Config.php
@@ -21,7 +21,7 @@ class HTMLPurifier_Config
      * HTML Purifier's version
      * @type string
      */
-    public $version = '4.13.0';
+    public $version = '4.17.0';
 
     /**
      * Whether or not to automatically finalize
@@ -803,7 +803,7 @@ public static function prepareArrayFromForm($array, $index = false, $allowed = t
         if ($index !== false) {
             $array = (isset($array[$index]) && is_array($array[$index])) ? $array[$index] : array();
         }
-        $mq = $mq_fix && function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc();
+        $mq = $mq_fix && version_compare(PHP_VERSION, '7.4.0', '<') && function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc();
 
         $allowed = HTMLPurifier_Config::getAllowedDirectivesForForm($allowed, $schema);
         $ret = array();
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php
index b82c6bb..bfad967 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php
@@ -287,13 +287,14 @@ private function _testPermissions($dir, $chmod)
             } elseif (filegroup($dir) === posix_getgid()) {
                 $chmod = $chmod | 0070;
             } else {
-                // PHP's probably running as nobody, so we'll
-                // need to give global permissions
-                $chmod = $chmod | 0777;
+              // PHP's probably running as nobody, it is
+              // not obvious how to fix this (777 is probably
+              // bad if you are multi-user), let the user figure it out
+                $chmod = null;
             }
             trigger_error(
-                'Directory ' . $dir . ' not writable, ' .
-                'please chmod to ' . decoct($chmod),
+                'Directory ' . $dir . ' not writable. ' .
+                ($chmod === null ? '' : 'Please chmod to ' . decoct($chmod)),
                 E_USER_WARNING
             );
         } else {
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCacheFactory.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCacheFactory.php
index fd1cc9b..3a0f461 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCacheFactory.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCacheFactory.php
@@ -71,7 +71,7 @@ public function create($type, $config)
             return $this->caches[$method][$type];
         }
         if (isset($this->implementations[$method]) &&
-            class_exists($class = $this->implementations[$method], false)) {
+            class_exists($class = $this->implementations[$method])) {
             $cache = new $class($type);
         } else {
             if ($method != 'Serializer') {
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ElementDef.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ElementDef.php
index d5311ce..57cfd2b 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ElementDef.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ElementDef.php
@@ -176,7 +176,7 @@ public function mergeIn($def)
 
         if (!empty($def->content_model)) {
             $this->content_model =
-                str_replace("#SUPER", $this->content_model, $def->content_model);
+                str_replace("#SUPER", (string)$this->content_model, $def->content_model);
             $this->child = false;
         }
         if (!empty($def->content_model_type)) {
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Encoder.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Encoder.php
index 40a2426..d4791cc 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Encoder.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Encoder.php
@@ -398,8 +398,8 @@ public static function convertToUTF8($str, $config, $context)
             // characters to their true byte-wise ASCII/UTF-8 equivalents.
             $str = strtr($str, self::testEncodingSupportsASCII($encoding));
             return $str;
-        } elseif ($encoding === 'iso-8859-1') {
-            $str = utf8_encode($str);
+        } elseif ($encoding === 'iso-8859-1' && function_exists('mb_convert_encoding')) {
+            $str = mb_convert_encoding($str, 'UTF-8', 'ISO-8859-1');
             return $str;
         }
         $bug = HTMLPurifier_Encoder::testIconvTruncateBug();
@@ -450,8 +450,8 @@ public static function convertFromUTF8($str, $config, $context)
             // Normal stuff
             $str = self::iconv('utf-8', $encoding . '//IGNORE', $str);
             return $str;
-        } elseif ($encoding === 'iso-8859-1') {
-            $str = utf8_decode($str);
+        } elseif ($encoding === 'iso-8859-1' && function_exists('mb_convert_encoding')) {
+            $str = mb_convert_encoding($str, 'ISO-8859-1', 'UTF-8');
             return $str;
         }
         trigger_error('Encoding not supported', E_USER_ERROR);
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Filter/ExtractStyleBlocks.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Filter/ExtractStyleBlocks.php
index 66f70b0..6f8e779 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Filter/ExtractStyleBlocks.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Filter/ExtractStyleBlocks.php
@@ -146,175 +146,179 @@ public function cleanCSS($css, $config, $context)
         foreach ($this->_tidy->css as $k => $decls) {
             // $decls are all CSS declarations inside an @ selector
             $new_decls = array();
-            foreach ($decls as $selector => $style) {
-                $selector = trim($selector);
-                if ($selector === '') {
-                    continue;
-                } // should not happen
-                // Parse the selector
-                // Here is the relevant part of the CSS grammar:
-                //
-                // ruleset
-                //   : selector [ ',' S* selector ]* '{' ...
-                // selector
-                //   : simple_selector [ combinator selector | S+ [ combinator? selector ]? ]?
-                // combinator
-                //   : '+' S*
-                //   : '>' S*
-                // simple_selector
-                //   : element_name [ HASH | class | attrib | pseudo ]*
-                //   | [ HASH | class | attrib | pseudo ]+
-                // element_name
-                //   : IDENT | '*'
-                //   ;
-                // class
-                //   : '.' IDENT
-                //   ;
-                // attrib
-                //   : '[' S* IDENT S* [ [ '=' | INCLUDES | DASHMATCH ] S*
-                //     [ IDENT | STRING ] S* ]? ']'
-                //   ;
-                // pseudo
-                //   : ':' [ IDENT | FUNCTION S* [IDENT S*]? ')' ]
-                //   ;
-                //
-                // For reference, here are the relevant tokens:
-                //
-                // HASH         #{name}
-                // IDENT        {ident}
-                // INCLUDES     ==
-                // DASHMATCH    |=
-                // STRING       {string}
-                // FUNCTION     {ident}\(
-                //
-                // And the lexical scanner tokens
-                //
-                // name         {nmchar}+
-                // nmchar       [_a-z0-9-]|{nonascii}|{escape}
-                // nonascii     [\240-\377]
-                // escape       {unicode}|\\[^\r\n\f0-9a-f]
-                // unicode      \\{h}}{1,6}(\r\n|[ \t\r\n\f])?
-                // ident        -?{nmstart}{nmchar*}
-                // nmstart      [_a-z]|{nonascii}|{escape}
-                // string       {string1}|{string2}
-                // string1      \"([^\n\r\f\\"]|\\{nl}|{escape})*\"
-                // string2      \'([^\n\r\f\\"]|\\{nl}|{escape})*\'
-                //
-                // We'll implement a subset (in order to reduce attack
-                // surface); in particular:
-                //
-                //      - No Unicode support
-                //      - No escapes support
-                //      - No string support (by proxy no attrib support)
-                //      - element_name is matched against allowed
-                //        elements (some people might find this
-                //        annoying...)
-                //      - Pseudo-elements one of :first-child, :link,
-                //        :visited, :active, :hover, :focus
+            if (is_array($decls)) {
+                foreach ($decls as $selector => $style) {
+                    $selector = trim($selector);
+                    if ($selector === '') {
+                        continue;
+                    } // should not happen
+                    // Parse the selector
+                    // Here is the relevant part of the CSS grammar:
+                    //
+                    // ruleset
+                    //   : selector [ ',' S* selector ]* '{' ...
+                    // selector
+                    //   : simple_selector [ combinator selector | S+ [ combinator? selector ]? ]?
+                    // combinator
+                    //   : '+' S*
+                    //   : '>' S*
+                    // simple_selector
+                    //   : element_name [ HASH | class | attrib | pseudo ]*
+                    //   | [ HASH | class | attrib | pseudo ]+
+                    // element_name
+                    //   : IDENT | '*'
+                    //   ;
+                    // class
+                    //   : '.' IDENT
+                    //   ;
+                    // attrib
+                    //   : '[' S* IDENT S* [ [ '=' | INCLUDES | DASHMATCH ] S*
+                    //     [ IDENT | STRING ] S* ]? ']'
+                    //   ;
+                    // pseudo
+                    //   : ':' [ IDENT | FUNCTION S* [IDENT S*]? ')' ]
+                    //   ;
+                    //
+                    // For reference, here are the relevant tokens:
+                    //
+                    // HASH         #{name}
+                    // IDENT        {ident}
+                    // INCLUDES     ==
+                    // DASHMATCH    |=
+                    // STRING       {string}
+                    // FUNCTION     {ident}\(
+                    //
+                    // And the lexical scanner tokens
+                    //
+                    // name         {nmchar}+
+                    // nmchar       [_a-z0-9-]|{nonascii}|{escape}
+                    // nonascii     [\240-\377]
+                    // escape       {unicode}|\\[^\r\n\f0-9a-f]
+                    // unicode      \\{h}}{1,6}(\r\n|[ \t\r\n\f])?
+                    // ident        -?{nmstart}{nmchar*}
+                    // nmstart      [_a-z]|{nonascii}|{escape}
+                    // string       {string1}|{string2}
+                    // string1      \"([^\n\r\f\\"]|\\{nl}|{escape})*\"
+                    // string2      \'([^\n\r\f\\"]|\\{nl}|{escape})*\'
+                    //
+                    // We'll implement a subset (in order to reduce attack
+                    // surface); in particular:
+                    //
+                    //      - No Unicode support
+                    //      - No escapes support
+                    //      - No string support (by proxy no attrib support)
+                    //      - element_name is matched against allowed
+                    //        elements (some people might find this
+                    //        annoying...)
+                    //      - Pseudo-elements one of :first-child, :link,
+                    //        :visited, :active, :hover, :focus
 
-                // handle ruleset
-                $selectors = array_map('trim', explode(',', $selector));
-                $new_selectors = array();
-                foreach ($selectors as $sel) {
-                    // split on +, > and spaces
-                    $basic_selectors = preg_split('/\s*([+> ])\s*/', $sel, -1, PREG_SPLIT_DELIM_CAPTURE);
-                    // even indices are chunks, odd indices are
-                    // delimiters
-                    $nsel = null;
-                    $delim = null; // guaranteed to be non-null after
-                    // two loop iterations
-                    for ($i = 0, $c = count($basic_selectors); $i < $c; $i++) {
-                        $x = $basic_selectors[$i];
-                        if ($i % 2) {
-                            // delimiter
-                            if ($x === ' ') {
-                                $delim = ' ';
-                            } else {
-                                $delim = ' ' . $x . ' ';
-                            }
-                        } else {
-                            // simple selector
-                            $components = preg_split('/([#.:])/', $x, -1, PREG_SPLIT_DELIM_CAPTURE);
-                            $sdelim = null;
-                            $nx = null;
-                            for ($j = 0, $cc = count($components); $j < $cc; $j++) {
-                                $y = $components[$j];
-                                if ($j === 0) {
-                                    if ($y === '*' || isset($html_definition->info[$y = strtolower($y)])) {
-                                        $nx = $y;
-                                    } else {
-                                        // $nx stays null; this matters
-                                        // if we don't manage to find
-                                        // any valid selector content,
-                                        // in which case we ignore the
-                                        // outer $delim
-                                    }
-                                } elseif ($j % 2) {
-                                    // set delimiter
-                                    $sdelim = $y;
+                    // handle ruleset
+                    $selectors = array_map('trim', explode(',', $selector));
+                    $new_selectors = array();
+                    foreach ($selectors as $sel) {
+                        // split on +, > and spaces
+                        $basic_selectors = preg_split('/\s*([+> ])\s*/', $sel, -1, PREG_SPLIT_DELIM_CAPTURE);
+                        // even indices are chunks, odd indices are
+                        // delimiters
+                        $nsel = null;
+                        $delim = null; // guaranteed to be non-null after
+                        // two loop iterations
+                        for ($i = 0, $c = count($basic_selectors); $i < $c; $i++) {
+                            $x = $basic_selectors[$i];
+                            if ($i % 2) {
+                                // delimiter
+                                if ($x === ' ') {
+                                    $delim = ' ';
                                 } else {
-                                    $attrdef = null;
-                                    if ($sdelim === '#') {
-                                        $attrdef = $this->_id_attrdef;
-                                    } elseif ($sdelim === '.') {
-                                        $attrdef = $this->_class_attrdef;
-                                    } elseif ($sdelim === ':') {
-                                        $attrdef = $this->_enum_attrdef;
+                                    $delim = ' ' . $x . ' ';
+                                }
+                            } else {
+                                // simple selector
+                                $components = preg_split('/([#.:])/', $x, -1, PREG_SPLIT_DELIM_CAPTURE);
+                                $sdelim = null;
+                                $nx = null;
+                                for ($j = 0, $cc = count($components); $j < $cc; $j++) {
+                                    $y = $components[$j];
+                                    if ($j === 0) {
+                                        if ($y === '*' || isset($html_definition->info[$y = strtolower($y)])) {
+                                            $nx = $y;
+                                        } else {
+                                            // $nx stays null; this matters
+                                            // if we don't manage to find
+                                            // any valid selector content,
+                                            // in which case we ignore the
+                                            // outer $delim
+                                        }
+                                    } elseif ($j % 2) {
+                                        // set delimiter
+                                        $sdelim = $y;
                                     } else {
-                                        throw new HTMLPurifier_Exception('broken invariant sdelim and preg_split');
-                                    }
-                                    $r = $attrdef->validate($y, $config, $context);
-                                    if ($r !== false) {
-                                        if ($r !== true) {
-                                            $y = $r;
+                                        $attrdef = null;
+                                        if ($sdelim === '#') {
+                                            $attrdef = $this->_id_attrdef;
+                                        } elseif ($sdelim === '.') {
+                                            $attrdef = $this->_class_attrdef;
+                                        } elseif ($sdelim === ':') {
+                                            $attrdef = $this->_enum_attrdef;
+                                        } else {
+                                            throw new HTMLPurifier_Exception('broken invariant sdelim and preg_split');
                                         }
-                                        if ($nx === null) {
-                                            $nx = '';
+                                        $r = $attrdef->validate($y, $config, $context);
+                                        if ($r !== false) {
+                                            if ($r !== true) {
+                                                $y = $r;
+                                            }
+                                            if ($nx === null) {
+                                                $nx = '';
+                                            }
+                                            $nx .= $sdelim . $y;
                                         }
-                                        $nx .= $sdelim . $y;
                                     }
                                 }
-                            }
-                            if ($nx !== null) {
-                                if ($nsel === null) {
-                                    $nsel = $nx;
+                                if ($nx !== null) {
+                                    if ($nsel === null) {
+                                        $nsel = $nx;
+                                    } else {
+                                        $nsel .= $delim . $nx;
+                                    }
                                 } else {
-                                    $nsel .= $delim . $nx;
+                                    // delimiters to the left of invalid
+                                    // basic selector ignored
                                 }
-                            } else {
-                                // delimiters to the left of invalid
-                                // basic selector ignored
                             }
                         }
-                    }
-                    if ($nsel !== null) {
-                        if (!empty($scopes)) {
-                            foreach ($scopes as $s) {
-                                $new_selectors[] = "$s $nsel";
+                        if ($nsel !== null) {
+                            if (!empty($scopes)) {
+                                foreach ($scopes as $s) {
+                                    $new_selectors[] = "$s $nsel";
+                                }
+                            } else {
+                                $new_selectors[] = $nsel;
                             }
-                        } else {
-                            $new_selectors[] = $nsel;
                         }
                     }
-                }
-                if (empty($new_selectors)) {
-                    continue;
-                }
-                $selector = implode(', ', $new_selectors);
-                foreach ($style as $name => $value) {
-                    if (!isset($css_definition->info[$name])) {
-                        unset($style[$name]);
+                    if (empty($new_selectors)) {
                         continue;
                     }
-                    $def = $css_definition->info[$name];
-                    $ret = $def->validate($value, $config, $context);
-                    if ($ret === false) {
-                        unset($style[$name]);
-                    } else {
-                        $style[$name] = $ret;
+                    $selector = implode(', ', $new_selectors);
+                    foreach ($style as $name => $value) {
+                        if (!isset($css_definition->info[$name])) {
+                            unset($style[$name]);
+                            continue;
+                        }
+                        $def = $css_definition->info[$name];
+                        $ret = $def->validate($value, $config, $context);
+                        if ($ret === false) {
+                            unset($style[$name]);
+                        } else {
+                            $style[$name] = $ret;
+                        }
                     }
+                    $new_decls[$selector] = $style;
                 }
-                $new_decls[$selector] = $style;
+            } else {
+                continue;
             }
             $new_css[$k] = $new_decls;
         }
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule.php
index 6d898f8..9dbb987 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule.php
@@ -257,8 +257,9 @@ public function mergeInAttrIncludes(&$attr, $attr_includes)
      */
     public function makeLookup($list)
     {
+        $args = func_get_args();
         if (is_string($list)) {
-            $list = func_get_args();
+            $list = $args;
         }
         $ret = array();
         foreach ($list as $value) {
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/CommonAttributes.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/CommonAttributes.php
index a96ab1b..7220c14 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/CommonAttributes.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/CommonAttributes.php
@@ -17,6 +17,7 @@ class HTMLPurifier_HTMLModule_CommonAttributes extends HTMLPurifier_HTMLModule
             'class' => 'Class',
             'id' => 'ID',
             'title' => 'CDATA',
+            'contenteditable' => 'ContentEditable',
         ),
         'Lang' => array(),
         'I18N' => array(
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy.php
index 08aa232..76fd93a 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy.php
@@ -146,10 +146,7 @@ public function populate($fixes)
                         $type = "info_$type";
                         $e = $this;
                     }
-                    // PHP does some weird parsing when I do
-                    // $e->$type[$attr], so I have to assign a ref.
-                    $f =& $e->$type;
-                    $f[$attr] = $fix;
+                    $e->{$type}[$attr] = $fix;
                     break;
                 case 'tag_transform':
                     $this->info_tag_transform[$params['element']] = $fix;
@@ -224,6 +221,7 @@ public function getFixType($name)
      */
     public function makeFixes()
     {
+        return array();
     }
 }
 
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php
index 700a25d..9ee3ffc 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php
@@ -168,9 +168,11 @@ public function makeFixes()
         // @vspace for img ------------------------------------------------
         $r['img@vspace'] = new HTMLPurifier_AttrTransform_ImgSpace('vspace');
 
-        // @width for hr, td, th ------------------------------------------
+        // @width for table, hr, td, th, col ------------------------------------------
+        $r['table@width'] =
         $r['td@width'] =
         $r['th@width'] =
+        $r['col@width'] =
         $r['hr@width'] = new HTMLPurifier_AttrTransform_Length('width');
 
         return $r;
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/Linkify.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/Linkify.php
index 74f83ea..3b6d70f 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/Linkify.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/Linkify.php
@@ -40,6 +40,9 @@ public function handleText(&$token)
             '/\\b((?:[a-z][\\w\\-]+:(?:\\/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}\\/)(?:[^\\s()<>]|\\((?:[^\\s()<>]|(?:\\([^\\s()<>]+\\)))*\\))+(?:\\((?:[^\\s()<>]|(?:\\([^\\s()<>]+\\)))*\\)|[^\\s`!()\\[\\]{};:\'".,<>?\x{00ab}\x{00bb}\x{201c}\x{201d}\x{2018}\x{2019}]))/iu',
             $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
 
+        if ($bits === false) {
+            return;
+        }
 
         $token = array();
 
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php
index 9ee7aa8..42d5144 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php
@@ -31,6 +31,16 @@ class HTMLPurifier_Injector_RemoveSpansWithoutAttributes extends HTMLPurifier_In
      */
     private $context;
 
+    /**
+     * @type SplObjectStorage
+     */
+    private $markForDeletion;
+
+    public function __construct()
+    {
+        $this->markForDeletion = new SplObjectStorage();
+    }
+
     public function prepare($config, $context)
     {
         $this->attrValidator = new HTMLPurifier_AttrValidator();
@@ -64,7 +74,7 @@ public function handleElement(&$token)
 
         if ($current instanceof HTMLPurifier_Token_End && $current->name === 'span') {
             // Mark closing span tag for deletion
-            $current->markForDeletion = true;
+            $this->markForDeletion->attach($current);
             // Delete open span tag
             $token = false;
         }
@@ -75,7 +85,8 @@ public function handleElement(&$token)
      */
     public function handleEnd(&$token)
     {
-        if ($token->markForDeletion) {
+        if ($this->markForDeletion->contains($token)) {
+            $this->markForDeletion->detach($token);
             $token = false;
         }
     }
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/LanguageFactory.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/LanguageFactory.php
index 4e35272..16a4f69 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/LanguageFactory.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/LanguageFactory.php
@@ -109,7 +109,7 @@ public function create($config, $context, $code = false)
         } else {
             $class = 'HTMLPurifier_Language_' . $pcode;
             $file  = $this->dir . '/Language/classes/' . $code . '.php';
-            if (file_exists($file) || class_exists($class, false)) {
+            if (file_exists($file) || class_exists($class)) {
                 $lang = new $class($config, $context);
             } else {
                 // Go fallback
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Length.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Length.php
index e70da55..b6ea123 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Length.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Length.php
@@ -78,7 +78,7 @@ protected function validate()
         if ($this->n === '0' && $this->unit === false) {
             return true;
         }
-        if (!ctype_lower($this->unit)) {
+        if ($this->unit === false || !ctype_lower($this->unit)) {
             $this->unit = strtolower($this->unit);
         }
         if (!isset(HTMLPurifier_Length::$allowedUnits[$this->unit])) {
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer.php
index e9da3ed..1f552a1 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer.php
@@ -48,6 +48,11 @@ class HTMLPurifier_Lexer
      */
     public $tracksLineNumbers = false;
 
+    /**
+     * @type HTMLPurifier_EntityParser
+     */
+    private $_entity_parser;
+
     // -- STATIC ----------------------------------------------------------
 
     /**
@@ -96,7 +101,7 @@ public static function create($config)
                         break;
                     }
 
-                    if (class_exists('DOMDocument', false) &&
+                    if (class_exists('DOMDocument') &&
                         method_exists('DOMDocument', 'loadHTML') &&
                         !extension_loaded('domxml')
                     ) {
@@ -306,8 +311,8 @@ public function normalize($html, $config, $context)
     {
         // normalize newlines to \n
         if ($config->get('Core.NormalizeNewlines')) {
-            $html = str_replace("\r\n", "\n", $html);
-            $html = str_replace("\r", "\n", $html);
+            $html = str_replace("\r\n", "\n", (string)$html);
+            $html = str_replace("\r", "\n", (string)$html);
         }
 
         if ($config->get('HTML.Trusted')) {
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/DOMLex.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/DOMLex.php
index ca5f25b..5e8104b 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/DOMLex.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/DOMLex.php
@@ -104,7 +104,6 @@ public function tokenizeHTML($html, $config, $context)
      * To iterate is human, to recurse divine - L. Peter Deutsch
      * @param DOMNode $node DOMNode to be tokenized.
      * @param HTMLPurifier_Token[] $tokens   Array-list of already tokenized tokens.
-     * @return HTMLPurifier_Token of node appended to previously passed tokens.
      */
     protected function tokenizeDOM($node, &$tokens, $config)
     {
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/PH5P.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/PH5P.php
index 72476dd..1564f28 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/PH5P.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/PH5P.php
@@ -4410,7 +4410,7 @@ private function insertElement($token, $append = true, $check = false)
 
         foreach ($token['attr'] as $attr) {
             if (!$el->hasAttribute($attr['name'])) {
-                $el->setAttribute($attr['name'], $attr['value']);
+                $el->setAttribute($attr['name'], (string)$attr['value']);
             }
         }
 
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Printer/ConfigForm.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Printer/ConfigForm.php
index 33ae113..4c3ce17 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Printer/ConfigForm.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Printer/ConfigForm.php
@@ -32,6 +32,11 @@ class HTMLPurifier_Printer_ConfigForm extends HTMLPurifier_Printer
      */
     protected $compress = false;
 
+    /**
+     * @var HTMLPurifier_Config
+     */
+    protected $genConfig;
+
     /**
      * @param string $name Form element name for directives to be stuffed into
      * @param string $doc_url String documentation URL, will have fragment tagged on
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/PropertyListIterator.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/PropertyListIterator.php
index 15b330e..f68fc8c 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/PropertyListIterator.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/PropertyListIterator.php
@@ -29,6 +29,7 @@ public function __construct(Iterator $iterator, $filter = null)
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function accept()
     {
         $key = $this->getInnerIterator()->key();
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/StringHash.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/StringHash.php
index c073701..c41ae3a 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/StringHash.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/StringHash.php
@@ -20,6 +20,7 @@ class HTMLPurifier_StringHash extends ArrayObject
      * @param mixed $index
      * @return mixed
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($index)
     {
         $this->accessed[$index] = true;
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/HostBlacklist.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/HostBlacklist.php
index a6645c1..32197c0 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/HostBlacklist.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/HostBlacklist.php
@@ -35,7 +35,7 @@ public function prepare($config)
     public function filter(&$uri, $config, $context)
     {
         foreach ($this->blacklist as $blacklisted_host_fragment) {
-            if (strpos($uri->host, $blacklisted_host_fragment) !== false) {
+            if ($uri->host !== null && strpos($uri->host, $blacklisted_host_fragment) !== false) {
                 return false;
             }
         }
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/Munge.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/Munge.php
index 6e03315..e1393de 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/Munge.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/Munge.php
@@ -100,11 +100,11 @@ protected function makeReplace($uri, $config, $context)
         $string = $uri->toString();
         // always available
         $this->replace['%s'] = $string;
-        $this->replace['%r'] = $context->get('EmbeddedURI', true);
-        $token = $context->get('CurrentToken', true);
-        $this->replace['%n'] = $token ? $token->name : null;
-        $this->replace['%m'] = $context->get('CurrentAttr', true);
-        $this->replace['%p'] = $context->get('CurrentCSSProperty', true);
+        $this->replace['%r'] = $context->get('EmbeddedURI', true) ?: '';
+        $token = $context->get('CurrentToken', true) ?: '';
+        $this->replace['%n'] = $token ? $token->name : '';
+        $this->replace['%m'] = $context->get('CurrentAttr', true) ?: '';
+        $this->replace['%p'] = $context->get('CurrentCSSProperty', true) ?: '';
         // not always available
         if ($this->secretKey) {
             $this->replace['%t'] = hash_hmac("sha256", $string, $this->secretKey);
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/tel.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/tel.php
index 8cd1933..dfad8ef 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/tel.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/tel.php
@@ -33,11 +33,11 @@ public function doValidate(&$uri, $config, $context)
         $uri->host     = null;
         $uri->port     = null;
 
-        // Delete all non-numeric characters, non-x characters
+        // Delete all non-numeric characters, commas, and non-x characters
         // from phone number, EXCEPT for a leading plus sign.
-        $uri->path = preg_replace('/(?!^\+)[^\dx]/', '',
+        $uri->path = preg_replace('/(?!^\+)[^\dx,]/', '',
                      // Normalize e(x)tension to lower-case
-                     str_replace('X', 'x', $uri->path));
+                     str_replace('X', 'x', rawurldecode($uri->path)));
 
         return true;
     }
diff --git a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/UnitConverter.php b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/UnitConverter.php
index 166f3bf..b5a1eab 100644
--- a/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/UnitConverter.php
+++ b/Resources/Private/Php/Libraries/vendor/ezyang/htmlpurifier/library/HTMLPurifier/UnitConverter.php
@@ -261,7 +261,7 @@ private function div($s1, $s2, $scale)
      */
     private function round($n, $sigfigs)
     {
-        $new_log = (int)floor(log(abs($n), 10)); // Number of digits left of decimal - 1
+        $new_log = (int)floor(log(abs((float)$n), 10)); // Number of digits left of decimal - 1
         $rp = $sigfigs - $new_log - 1; // Number of decimal places needed
         $neg = $n < 0 ? '-' : ''; // Negative sign
         if ($this->bcmath) {
@@ -276,7 +276,7 @@ private function round($n, $sigfigs)
             }
             return $n;
         } else {
-            return $this->scale(round($n, $sigfigs - $new_log - 1), $rp + 1);
+            return $this->scale(round((float)$n, $sigfigs - $new_log - 1), $rp + 1);
         }
     }
 
@@ -300,7 +300,7 @@ private function scale($r, $scale)
             // Now we return it, truncating the zero that was rounded off.
             return substr($precise, 0, -1) . str_repeat('0', -$scale + 1);
         }
-        return sprintf('%.' . $scale . 'f', (float)$r);
+        return number_format((float)$r, $scale, '.', '');
     }
 }
 
diff --git a/composer.json b/composer.json
index afa1e07..7bc1744 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
 	],
 	"require": {
 		"typo3/cms-core": "^10.4 || ^11.5",
-		"ezyang/htmlpurifier": "^4.13"
+		"ezyang/htmlpurifier": "^4.17"
 	},
 	"autoload": {
 		"psr-4": {