CVE-2013-4569: Mediawiki

Medium severity, CVSS 4.3. EPSS: 1.8% chance of exploitation in the next 30 days.

The CleanChanges extension for MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3, when "Group changes by page in recent changes and watchlist" is enabled, allows remote attackers to obtain sensitive information (revision-deleted IPs) via the Recent Changes page.

Affected products

• Mediawiki Mediawiki: version 1.20 only; version 1.20.1 only; version 1.20.2 only; version 1.20.3 only; version 1.20.4 only; version 1.20.5 only; …

Published 2013-12-13. Last modified 2026-06-16.