CVE-2021-42046: Mediawiki

Medium severity, CVSS 6.1. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in the GlobalWatchlist extension in MediaWiki through 1.36.2. The rev-deleted-user and ntimes messages were not properly escaped and allowed for users to inject HTML and JavaScript.

Affected products

• Mediawiki Mediawiki: up to and including 1.36.2

Published 2022-09-29. Last modified 2026-06-17.