There is 1 open security issue in bullseye.
1 issue left for the package maintainer to handle:
(postponed; to be fixed through a stable update)
In MediaWiki before 1.31.15, 1.32.x through 1.35.x before 1.35.3, and 1.36.x before 1.36.1, bots have certain unintended API access. When a bot account has a "sitewide block" applied, it is able to still "purge" pages through the MediaWiki Action API (which a "sitewide block" should have prevented).
You can find information about how to handle this issue in the security team's documentation.