{"id":"CVE-2020-25812","details":"An issue was discovered in MediaWiki 1.34.x before 1.34.4. 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.","aliases":["BIT-mediawiki-2020-25812","GHSA-rj9p-8jxj-2ch4"],"modified":"2026-04-02T05:09:47.998728Z","published":"2020-09-27T21:15:12.563Z","related":["MGASA-2020-0381"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/"},{"type":"ADVISORY","url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html"},{"type":"ADVISORY","url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html"},{"type":"ADVISORY","url":"https://gerrit.wikimedia.org/g/mediawiki/core/+/ad4a3ba45fb955aa8c0eb3c83809b16b40a498b9/includes/specials/SpecialContributions.php#592"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki","events":[{"introduced":"29977ebe4c05cab4cac46fd1a8459e27f50fb153"},{"fixed":"e34e7f20b51ed7514ba6de8d8a390363ade2237f"}],"database_specific":{"versions":[{"introduced":"1.34.0"},{"fixed":"1.34.4"}]}}],"versions":["1.34.0","1.34.1","1.34.2","1.34.3"],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"33"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-25812.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}