CVE-2021-41799: Fedoraproject Fedora

High severity, CVSS 7.5. EPSS: 1.7% 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). ApiQueryBacklinks (action=query&list=backlinks) can cause a full table scan.

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.