{"id":"CVE-2023-37252","state":"PUBLISHED","title":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.","description":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.","publishedAt":"2026-09-14T00:00:00.000Z","updatedAt":"2026-09-14T16:16:59.396Z","severity":{"score":3.1,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"mitre"},"assigner":"mitre","products":["MediaWiki CheckUser"],"affected":[{"vendor":"MediaWiki","product":"CheckUser","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.35.11","versionType":"semver"},{"version":"1.36.0","status":"affected","lessThan":"1.38.7","versionType":"semver"},{"version":"1.39.0","status":"affected","lessThan":"1.39.4","versionType":"semver"}]}],"references":["https://phabricator.wikimedia.org/T330968"],"weaknesses":["CWE-669"],"ingestedAt":"2026-10-29T20:06:08.715Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/37xxx/CVE-2023-37252.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-37252","state":"PUBLISHED","datePublished":"2026-09-14T00:00:00.000Z","dateUpdated":"2026-09-14T16:16:59.396Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2023-06-29T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden."}],"affected":[{"vendor":"MediaWiki","product":"CheckUser","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.35.11","versionType":"semver"},{"version":"1.36.0","status":"affected","lessThan":"1.38.7","versionType":"semver"},{"version":"1.39.0","status":"affected","lessThan":"1.39.4","versionType":"semver"}]}],"references":[{"url":"https://phabricator.wikimedia.org/T330968"}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-669","description":"CWE-669 Incorrect Resource Transfer Between Spheres","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-09-14T05:12:30.342Z"},"x_generator":{"engine":"enrichogram 0.0.1"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:*:*:*","versionEndExcluding":"1.35.11"},{"vulnerable":true,"criteria":"cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:*:*:*","versionStartIncluding":"1.36.0","versionEndExcluding":"1.38.7"},{"vulnerable":true,"criteria":"cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:*:*:*","versionStartIncluding":"1.39.0","versionEndExcluding":"1.39.4"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://phabricator.wikimedia.org/T330968","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-14T16:16:37.844636Z","id":"CVE-2023-37252","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-14T16:16:59.396Z"}}]}}}