CVE-2022-28205: Mediawiki

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

An issue was discovered in MediaWiki through 1.37.1. The CentralAuth extension mishandles a ttl issue for groups expiring in the future.

Affected products

• Mediawiki Mediawiki: up to and including 1.37.1

Published 2022-03-30. Last modified 2026-06-17.