CVE-2024-47845: Wikimedia Wikimedia-Extensions-Css

High severity, CVSS 8.2. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper Encoding or Escaping of Output vulnerability in The Wikimedia Foundation Mediawiki - CSS Extension allows Code Injection.This issue affects Mediawiki - CSS Extension: from 1.39.X before 1.39.9, from 1.41.X before 1.41.3, from 1.42.X before 1.42.2.

Affected products

• Wikimedia Wikimedia-Extensions-Css: from 1.39.0, before 1.39.9 (fixed in 1.39.9); from 1.41.0, before 1.41.3 (fixed in 1.41.3); from 1.42.0, before 1.42.2 (fixed in 1.42.2)

Published 2024-10-05. Last modified 2026-06-17.