{"id":"CVE-2021-41800","details":"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.","aliases":["BIT-mediawiki-2021-41800","GHSA-c8wv-qwwc-6j73"],"modified":"2026-04-11T12:38:10.698705Z","published":"2021-10-11T08:15:06.813Z","related":["MGASA-2021-0477"],"database_specific":{"unresolved_ranges":[{"source":"CPE_FIELD","cpe":"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*","extracted_events":[{"last_affected":"33"}]},{"source":"CPE_FIELD","cpe":"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*","extracted_events":[{"last_affected":"34"}]},{"source":"CPE_FIELD","cpe":"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*","extracted_events":[{"last_affected":"35"}]}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJDYJQWT43GBD6GNQ4OW7JOZ6WQ6DZTN/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDBPECBWN6LWNSWIQMVXK6PP4YFEUYHA/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNEAI2T3Y65I55ZB6UE6RMC662RZTGRX/"},{"type":"WEB","url":"https://lists.wikimedia.org/hyperkitty/list/wikitech-l%40lists.wikimedia.org/thread/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202305-24"},{"type":"REPORT","url":"https://phabricator.wikimedia.org/T284419"},{"type":"FIX","url":"https://github.com/wikimedia/mediawiki/commit/781caf83dba90c18349f930bbaaa0e89f003f874"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki","events":[{"introduced":"0"},{"fixed":"f65f9d6971578b301ef9fc915a729e6a13266a5e"},{"fixed":"781caf83dba90c18349f930bbaaa0e89f003f874"}],"database_specific":{"source":["CPE_FIELD","REFERENCES"],"cpe":"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.36.2"}]}}],"versions":["1.1.0","1.3.0beta1","1.36.0","1.36.0-rc.0","1.36.1","1.5.0alpha1","1.5.0alpha2","1.5.0beta1","1.5.0beta2","1.5.0beta3","1.5.0beta4","1.6.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-41800.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}