CVE-2021-41800: Fedoraproject Fedora

Medium severity, CVSS 5.3. EPSS: 1.8% chance of exploitation in the next 30 days.

MediaWiki before 1.36.2 allows a denial of service (resource consumption because of lengthy query processing time). Visiting Special:Contributions can sometimes result in a long running SQL query because PoolCounter protection is mishandled.

Affected products

• Fedoraproject Fedora: version 33 only; version 34 only; version 35 only
• Mediawiki Mediawiki: before 1.36.2 (fixed in 1.36.2)

Published 2021-10-11. Last modified 2026-06-17.