{"id":"CVE-2025-53487","state":"PUBLISHED","title":"ApprovedRevs: Stored Cross-Site Scripting (XSS) via unsanitized system messages","description":"The ApprovedRevs extension for MediaWiki is vulnerable to stored XSS in multiple locations where system messages are inserted into raw HTML without proper escaping. Attackers can exploit this by injecting JavaScript payloads via the uselang=x-xss language override, which causes crafted message keys to be rendered unescaped.\n\n\n\n\nThis issue affects Mediawiki - ApprovedRevs extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.","publishedAt":"2025-07-07T15:13:38.574Z","updatedAt":"2025-07-07T19:16:14.015Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","source":"CISA-ADP"},"assigner":"wikimedia-foundation","products":["Wikimedia Foundation Mediawiki - ApprovedRevs extension"],"affected":[{"vendor":"Wikimedia Foundation","product":"Mediawiki - ApprovedRevs extension","defaultStatus":"unaffected","versions":[{"version":"1.39.x","status":"affected","lessThan":"1.39.13","versionType":"semver"},{"version":"1.42.x","status":"affected","lessThan":"1.42.7","versionType":"semver"},{"version":"1.43.x","status":"affected","lessThan":"1.43.2","versionType":"semver"}]}],"references":["https://phabricator.wikimedia.org/T394383","https://gerrit.wikimedia.org/r/q/Ifcab085111e7898da485a5e2ae287fee4e6d167b"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:09:31.862Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/53xxx/CVE-2025-53487.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-53487","state":"PUBLISHED","datePublished":"2025-07-07T15:13:38.574Z","dateUpdated":"2025-07-07T19:16:14.015Z","assignerShortName":"wikimedia-foundation","assignerOrgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateReserved":"2025-06-30T15:20:44.462Z"},"containers":{"cna":{"title":"ApprovedRevs: Stored Cross-Site Scripting (XSS) via unsanitized system messages","descriptions":[{"lang":"en","value":"The ApprovedRevs extension for MediaWiki is vulnerable to stored XSS in multiple locations where system messages are inserted into raw HTML without proper escaping. Attackers can exploit this by injecting JavaScript payloads via the uselang=x-xss language override, which causes crafted message keys to be rendered unescaped.\n\n\n\n\nThis issue affects Mediawiki - ApprovedRevs extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2."}],"affected":[{"vendor":"Wikimedia Foundation","product":"Mediawiki - ApprovedRevs extension","defaultStatus":"unaffected","versions":[{"version":"1.39.x","status":"affected","lessThan":"1.39.13","versionType":"semver"},{"version":"1.42.x","status":"affected","lessThan":"1.42.7","versionType":"semver"},{"version":"1.43.x","status":"affected","lessThan":"1.43.2","versionType":"semver"}]}],"references":[{"url":"https://phabricator.wikimedia.org/T394383"},{"url":"https://gerrit.wikimedia.org/r/q/Ifcab085111e7898da485a5e2ae287fee4e6d167b"}],"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":{"shortName":"wikimedia-foundation","orgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateUpdated":"2025-07-07T15:13:38.574Z"},"impacts":[{"capecId":"CAPEC-592","descriptions":[{"lang":"en","value":"CAPEC-592 Stored XSS"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","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":"2025-07-07T19:15:46.401420Z","id":"CVE-2025-53487","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-07-07T19:16:14.015Z"}}]}}}