{"id":"CVE-2021-46150","details":"An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. Special:CheckUserLog allows CheckUser XSS because of date mishandling, as demonstrated by an XSS payload in MediaWiki:October.","aliases":["BIT-mediawiki-2021-46150"],"modified":"2026-04-10T04:41:50.950608Z","published":"2022-01-10T14:11:29.430Z","references":[{"type":"ADVISORY","url":"https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/CheckUser/+/79c2c49a18f96b159258958feca90fce964c350a"},{"type":"EVIDENCE","url":"https://phabricator.wikimedia.org/T292795"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki","events":[{"introduced":"0"},{"fixed":"8b874ff6c6ed5f209dfd0c825c5b310ef1ecca2f"},{"introduced":"bc542ec6d8573dfb906b468901799e0017875f1e"},{"fixed":"b24aa9d8f87e8762c8dedc2f30f85383b77d4725"},{"introduced":"b5643675baaeec999e68c20fdde1dc8467c7c920"},{"fixed":"f8e3a1e258ab6beabb18dca2af983ef1647970c9"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.35.5"},{"introduced":"1.36.0"},{"fixed":"1.36.3"},{"introduced":"1.37.0"},{"fixed":"1.37.1"}]}}],"versions":["1.1.0","1.3.0beta1","1.35.0","1.35.0-rc.0","1.35.0-rc.1","1.35.0-rc.2","1.35.0-rc.3","1.35.1","1.35.2","1.35.3","1.35.4","1.36.0","1.36.1","1.36.2","1.37.0","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/cve-osv-conversion/osv-output/CVE-2021-46150.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"}]}