Multiple security issues were found in MediaWiki, a website engine for collaborative work, which could result in cross-site scripting,
denial of service and a bypass of restrictions in the "Replace Text"
For the oldstable distribution (buster), these problems have been fixed
in version 1:1.31.16-1~deb10u1.
For the stable distribution (bullseye), these problems have been fixed in version 1:1.35.4-1~deb11u1.
We recommend that you upgrade your mediawiki packages.