CVE-2016-6331: Mediawiki

High severity, CVSS 7.5. EPSS: 2.1% chance of exploitation in the next 30 days.

ApiParse in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to bypass intended per-title read restrictions via a parse action to api.php.

Affected products

• Mediawiki Mediawiki: up to and including 1.23.14; version 1.26.0 only; version 1.26.1 only; version 1.26.2 only; version 1.26.3 only; version 1.26.4 only; …

Published 2017-04-20. Last modified 2026-06-17.