An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Blocked users are unable to use Special:ResetTokens. This has security relevance because a blocked user might have accidentally shared a token, or might know that a token has been compromised, and yet is not able to block any potential future use of the token by an unauthorized party.
https://www.debian.org/security/2021/dsa-4889
https://security.gentoo.org/glsa/202107-40
https://phabricator.wikimedia.org/T277009
https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html
https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html