{"id":"CVE-2023-37252","aliases":["EUVD-2023-60663","GHSA-v83r-4pqq-r3wj"],"status":"published","title":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special...","description":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.","severity":{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0024,"percentile":0.15225,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-669"],"published":"2026-09-14T00:00:00Z","modified":"2026-09-16T19:31:54Z","products":[{"vendor":"mediawiki","product":"checkuser"},{"vendor":"wikimedia foundation","product":"checkuser"}],"references":[{"url":"https://phabricator.wikimedia.org/T330968","tags":["exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-37252"},{"url":"https://github.com/advisories/GHSA-v83r-4pqq-r3wj"}],"sources":{"cve":[{"id":"CVE-2023-37252","description":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.","status":"published","published":"2026-09-14T00:00:00Z","modified":"2026-09-14T16:16:59.396Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-669"],"updated_at":"2026-11-02T14:35:16.454633Z"}],"euvd":[{"id":"EUVD-2023-60663","description":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.","status":"published","published":"2026-09-14T00:00:00Z","modified":"2026-09-14T16:16:59Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T17:28:20.0825Z"}],"ghsa":[{"id":"GHSA-v83r-4pqq-r3wj","title":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special...","description":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.","status":"published","published":"2026-09-14T06:31:18Z","modified":"2026-09-14T06:31:25Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-669"],"updated_at":"2026-11-02T15:11:47.913221Z"}],"nvd":[{"id":"CVE-2023-37252","description":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.","status":"published","published":"2026-09-14T05:16:57.58Z","modified":"2026-09-16T19:31:54.21Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-669"],"updated_at":"2026-11-02T14:09:27.733183Z"}]}}