{"id":"CVE-2021-31548","details":"An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. A MediaWiki user who is partially blocked or was unsuccessfully blocked could bypass AbuseFilter and have their edits completed.","aliases":["BIT-mediawiki-2021-31548"],"modified":"2026-07-09T00:14:12.497490Z","published":"2021-04-22T03:15:08.033Z","references":[{"type":"ADVISORY","url":"https://phabricator.wikimedia.org/T272333"},{"type":"REPORT","url":"https://gerrit.wikimedia.org/r/q/Ifac795125927d584a31d95e1b4c4241eef860fa1"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki","events":[{"introduced":"0"},{"last_affected":"e5823c068a2e0d8af72538fe5cd152ddb43c58e9"}],"database_specific":{"cpe":"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.35.2"}],"source":"CPE_RANGE"}}],"versions":["1.35.2","1.35.1","1.35.0","1.35.0-rc.3","1.35.0-rc.2","1.35.0-rc.1","1.35.0-rc.0","test-hashar-for-ci","1.6.0","1.5.0beta4","1.5.0beta3","1.5.0beta2","1.5.0beta1","1.5.0alpha2","1.5.0alpha1","1.3.0beta1","1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31548.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:H/A:N"}]}