CVE-2026-34095: Mediawiki

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Actions/ActionEntryPoint.Php, includes/Request/FauxResponse.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.

Affected products

• Mediawiki Mediawiki: before 1.43.7 (fixed in 1.43.7); from 1.44.0, before 1.44.4 (fixed in 1.44.4); from 1.45.0, before 1.45.2 (fixed in 1.45.2)

Published 2026-05-11. Last modified 2026-06-17.