CVE-2021-42041: Mediawiki

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

An issue was discovered in CentralAuth in MediaWiki through 1.36.2. The rightsnone MediaWiki message was not being properly sanitized and allowed for the injection and execution of HTML and JavaScript via the setchange log.

Affected products

• Mediawiki Mediawiki: up to and including 1.36.2

Published 2021-10-06. Last modified 2026-06-17.