{"id":"CVE-2023-29139","details":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. When a user with checkuserlog permissions makes many CheckUserLog API requests in some configurations, denial of service can occur (RequestTimeoutException or upstream request timeout).","aliases":["BIT-mediawiki-2023-29139"],"modified":"2026-04-11T12:45:08.801742Z","published":"2023-03-31T19:15:07.470Z","database_specific":{},"references":[{"type":"FIX","url":"https://phabricator.wikimedia.org/T326293"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki","events":[{"introduced":"0"},{"last_affected":"2fdadd4096268cebab8fbc2f245dd441e2f05536"}],"database_specific":{"source":"CPE_FIELD","cpe":"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.39.3"}]}}],"versions":["1.1.0","1.3.0beta1","1.39.0","1.39.0-rc.0","1.39.0-rc.1","1.39.1","1.39.2","1.39.3","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-2023-29139.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}