CVE-2021-41799
HIGHMediaWiki < 1.36.2 - Denial of Service via ApiQueryBacklinks
Title source: llmDescription
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.
References (6)
Core 6
Core References
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNEAI2T3Y65I55ZB6UE6RMC662RZTGRX/
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJDYJQWT43GBD6GNQ4OW7JOZ6WQ6DZTN/
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDBPECBWN6LWNSWIQMVXK6PP4YFEUYHA/
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202305-24
Permissions Required
https://phabricator.wikimedia.org/T290394
Scores
CVSS v3
7.5
EPSS
0.0121
EPSS Percentile
79.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-770
Status
published
Products (4)
fedoraproject/fedora
33
fedoraproject/fedora
34
fedoraproject/fedora
35
mediawiki/mediawiki
< 1.36.2
Published
Oct 11, 2021
Tracked Since
Feb 18, 2026