CVE-2020-25812: MediaWiki Cross-site Scripting (XSS) vulnerability
(updated )
An issue was discovered in MediaWiki 1.34.x before 1.34.3. On Special:Contributions, the NS filter uses unescaped messages as keys in the option key for an HTMLForm specifier. This is vulnerable to a mild XSS if one of those messages is changed to include raw HTML.
References
- gerrit.wikimedia.org/g/mediawiki/core/+/ad4a3ba45fb955aa8c0eb3c83809b16b40a498b9/includes/specials/SpecialContributions.php
- github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25812.yaml
- github.com/advisories/GHSA-rj9p-8jxj-2ch4
- github.com/wikimedia/mediawiki
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6
- lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html
- lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html
- nvd.nist.gov/vuln/detail/CVE-2020-25812
- phabricator.wikimedia.org/T255918
Code Behaviors & Features
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