{"id":"CVE-2023-37255","details":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In Special:CheckUser, a check of the \"get edits\" type is vulnerable to HTML injection through the User-Agent HTTP request header.","aliases":["BIT-mediawiki-2023-37255"],"modified":"2026-05-28T04:08:59.158415594Z","published":"2023-06-29T00:00:00Z","database_specific":{"unresolved_ranges":[{"source":"DESCRIPTION","extracted_events":[{"fixed":"1.39.3"}]}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37255.json","cna_assigner":"mitre"},"references":[{"type":"WEB","url":"https://phabricator.wikimedia.org/T333569"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37255.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-37255"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki","events":[{"introduced":"0"},{"last_affected":"2fdadd4096268cebab8fbc2f245dd441e2f05536"}],"database_specific":{"cpe":"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*","source":"CPE_RANGE","extracted_events":[{"introduced":"0"},{"last_affected":"1.39.3"}]}}],"versions":["1.39.3","1.39.2","1.39.1","1.39.0","1.39.0-rc.1","1.39.0-rc.0","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/osv-test-cve-osv-conversion/osv-output/CVE-2023-37255.json"}}],"schema_version":"1.7.5"}