It's possible to craft Lost Password requests with wildcards in the Token value, which allows attacker to retrieve valid Token(s), generated by users which already requested new passwords. This issue affects: ((OTRS)) Community Edition 5.0.41 and prior versions, 6.0.26 and prior versions. OTRS: 7.0.15 and prior versions.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-1772
• https://lists.debian.org/debian-lts-announce/2020/05/msg00000.html
• https://otrs.com/release-notes/otrs-security-advisory-2020-09/
• http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00038.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00066.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00077.html
• https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html