CVE-2020-25812

MEDIUM6.1EPSS 0.37%

MediaWiki Cross-site Scripting (XSS) vulnerability

Published: 5/24/2022Modified: 4/28/2026
Also known as:GHSA-rj9p-8jxj-2ch4BIT-mediawiki-2020-25812DEBIAN-CVE-2020-25812

Description

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.

Affected packages (3)

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1MEDIUM6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References (10)