{"id":"CVE-2026-63002","state":"PUBLISHED","title":"REDAXO: Stored XSS in Mediapool Sync Page via Unescaped Filesystem Filenames","description":"REDAXO is a PHP-based content management system. Prior to 5.21.2, redaxo/src/addons/mediapool/pages/sync.php inserts filenames held in $diffFiles from the media filesystem into the Mediapool Sync page without rex_escape(). An attacker who can place an unregistered file with HTML metacharacters in the media directory can execute script in the browser of a backend user with media[sync] permission when that user opens the Sync page, enabling session theft or unauthorized backend actions. This issue is fixed in version 5.21.2.","publishedAt":"2026-09-23T14:05:39.056Z","updatedAt":"2026-09-24T14:26:12.432Z","severity":{"score":4.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["redaxo core"],"affected":[{"vendor":"redaxo","product":"core","versions":[{"version":"< 5.21.2","status":"affected"}]}],"references":["https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m","https://github.com/redaxo/core/pull/6581","https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c","https://github.com/redaxo/core/releases/tag/5.21.2"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63002.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63002","state":"PUBLISHED","datePublished":"2026-09-23T14:05:39.056Z","dateUpdated":"2026-09-24T14:26:12.432Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-14T23:10:57.032Z"},"containers":{"cna":{"title":"REDAXO: Stored XSS in Mediapool Sync Page via Unescaped Filesystem Filenames","descriptions":[{"lang":"en","value":"REDAXO is a PHP-based content management system. Prior to 5.21.2, redaxo/src/addons/mediapool/pages/sync.php inserts filenames held in $diffFiles from the media filesystem into the Mediapool Sync page without rex_escape(). An attacker who can place an unregistered file with HTML metacharacters in the media directory can execute script in the browser of a backend user with media[sync] permission when that user opens the Sync page, enabling session theft or unauthorized backend actions. This issue is fixed in version 5.21.2."}],"affected":[{"vendor":"redaxo","product":"core","versions":[{"version":"< 5.21.2","status":"affected"}]}],"references":[{"url":"https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m","name":"https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/redaxo/core/pull/6581","name":"https://github.com/redaxo/core/pull/6581","tags":["x_refsource_MISC"]},{"url":"https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c","name":"https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c","tags":["x_refsource_MISC"]},{"url":"https://github.com/redaxo/core/releases/tag/5.21.2","name":"https://github.com/redaxo/core/releases/tag/5.21.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-23T14:05:39.056Z"},"source":{"advisory":"GHSA-w998-qmw9-mf4m","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-24T14:26:05.685430Z","id":"CVE-2026-63002","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":"2026-09-24T14:26:12.432Z"}}]}}}