Error leaks secrets from Session::Cookie

[thefatphil]

D:S:Cookie:
Another setting is also required: session_cookie_key, which should contain a random string of at least 16 characters (shorter keys are not cryptographically strong using AES in CBC mode).
[...]
Compromising session_cookie_key will disclose session data to clients and proxies or eavesdroppers and will also allow tampering, for example session theft.

D:Error.pm sub _censor:
elsif ($key =~ /(pass|card?num|pan|secret|private_key)/i) {

Can the session_cookie_key be censored too?