{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-23T13:31:10.122","vulnerabilities":[{"cve":{"id":"CVE-2025-53479","sourceIdentifier":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","published":"2025-07-08T18:15:40.387","lastModified":"2026-04-15T00:35:42.020","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","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."},{"lang":"es","value":"La interfaz Special:CheckUser de la extensión CheckUser es vulnerable a XSS reflejado mediante el mensaje rev-deleted-user. Este mensaje se procesa sin el escape adecuado, lo que permite inyectar JavaScript mediante el mecanismo de anulación del lenguaje uselang=x-xss. Este problema afecta a Mediawiki - extensión CheckUser: desde la versión 1.39.X hasta la 1.39.13, desde la versión 1.42.X hasta la 1.42.7, desde la versión 1.43.X hasta la 1.43.2."}],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.3,"impactScore":2.7}]},"weaknesses":[{"source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","type":"Secondary","description":[{"lang":"en","value":"CWE-79"}]}],"references":[{"url":"https://gerrit.wikimedia.org/r/q/I159e14543912cb3bc7f4a00c3090c0285b154786","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"},{"url":"https://phabricator.wikimedia.org/T394693","source":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"},{"url":"https://phabricator.wikimedia.org/T394693","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}]}