CVE-2024-40596: Mediawiki

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered in the CheckUser extension for MediaWiki through 1.42.1. The Special:Investigate feature can expose suppressed information for log events. (TimelineService does not support properly suppressing.)

Affected products

• Mediawiki Mediawiki: up to and including 1.42.1

Published 2024-07-07. Last modified 2026-06-17.