Debian Security Advisory

DLA-2847-1 mediawiki -- LTS security update

Date Reported:
21 Dec 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-44858.
More information:

A security issue was discovered in MediaWiki, a website engine for collaborative work: Missing validation in the mcrundo action may allow allow an attacker to leak page content from private wikis or to bypass edit restrictions.

For additional information please refer to

For Debian 9 stretch, this problem has been fixed in version 1:1.27.7-1+deb9u11.

We recommend that you upgrade your mediawiki packages.

For the detailed security status of mediawiki please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: