{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-53479","assignerOrgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","state":"PUBLISHED","assignerShortName":"wikimedia-foundation","dateReserved":"2025-06-30T15:20:44.461Z","datePublished":"2025-07-08T17:16:36.081Z","dateUpdated":"2025-07-10T13:18:39.505Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Mediawiki - CheckUser extension","vendor":"Wikimedia Foundation","versions":[{"lessThan":"1.42.7","status":"affected","version":"1.42.x","versionType":"semver"},{"lessThan":"1.43.2","status":"affected","version":"1.43.x","versionType":"semver"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism.</p>\n\n\n<p>This issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.</p>"}],"value":"The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism.\n\n\n\n\nThis issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2."}],"impacts":[{"capecId":"CAPEC-591","descriptions":[{"lang":"en","value":"CAPEC-591 Reflected XSS"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","shortName":"wikimedia-foundation","dateUpdated":"2025-07-09T10:38:20.867Z"},"references":[{"url":"https://phabricator.wikimedia.org/T394693"},{"url":"https://gerrit.wikimedia.org/r/q/I159e14543912cb3bc7f4a00c3090c0285b154786"}],"source":{"discovery":"UNKNOWN"},"title":"CheckUser: Reflected Cross-Site Scripting (XSS) in Special:CheckUser via unsanitized internationalized message","x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"references":[{"url":"https://phabricator.wikimedia.org/T394693","tags":["exploit"]}],"metrics":[{"cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":5.4,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-07-10T13:18:02.588187Z","id":"CVE-2025-53479","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-07-10T13:18:39.505Z"}}]}}