CVE-2025-6926: Wikimedia Foundation Mediawiki - Centralauth Extension

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Improper Authentication vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows : Bypass Authentication.This issue affects Mediawiki - CentralAuth Extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

Affected products

• Wikimedia Foundation Mediawiki - Centralauth Extension: from 1.39, before 1.39.13 (fixed in 1.39.13); from 1.42, before 1.42.7 (fixed in 1.42.7); from 1.43, before 1.43.2 (fixed in 1.43.2)

Published 2025-07-03. Last modified 2026-06-17.