Several security vulnerabilities were discovered in mediawiki, a website engine for collaborative work. Insufficiently escaped input text may allow a malicious user to perform cross-site-scripting (XSS) attacks.
For Debian 10 buster, these problems have been fixed in version 1:1.31.16-1+deb10u3.
We recommend that you upgrade your mediawiki packages.
For the detailed security status of mediawiki please refer to its security tracker page at: https://security-tracker.debian.org/tracker/mediawiki
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS