{"id":"CVE-2026-63002","summary":"REDAXO: Stored XSS in Mediapool Sync Page via Unescaped Filesystem Filenames","details":"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.","aliases":["GHSA-w998-qmw9-mf4m"],"modified":"2026-09-26T03:30:29.776639700Z","published":"2026-09-23T14:05:39.056Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63002.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-79"]},"references":[{"type":"WEB","url":"https://github.com/redaxo/core/releases/tag/5.21.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63002.json"},{"type":"ADVISORY","url":"https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63002"},{"type":"FIX","url":"https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c"},{"type":"FIX","url":"https://github.com/redaxo/core/pull/6581"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/redaxo/core","events":[{"introduced":"0"},{"fixed":"2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c"},{"fixed":"31d61c6a460b6c8daf09baa75d6477fa3a93a68b"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"5.21.2"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["5.21.1","5.21.0","5.21.0-beta1","5.20.2","5.20.1","5.20.0","5.19.0","5.18.3","5.18.2","5.18.1","5.18.0","5.17.1","5.17.0","5.16.1","5.16.0","5.16.0-beta1","5.15.0","5.15.0-beta1","5.14.1","5.14.0","5.14.0-beta2","5.14.0-beta1","5.13.2","5.13.1","5.13.0","5.13.0-beta2","5.13.0-beta1","5.12.0","5.12.0-beta3","5.12.0-beta2","5.12.0-beta1","5.11.0","5.11.0-beta1","5.10.0","5.10.0-beta2","5.10.0-beta1","5.9.0","5.9.0-beta2","5.9.0-beta1","5.8.0","5.8.0-beta1","5.7.0","5.7.0-beta3","5.7.0-beta2","5.7.0-beta1","5.6.1","5.6.0","5.6.0-beta1","5.5.1","5.5.0","5.5.0-beta1","5.4.0","5.4.0-beta2","5.4.0-beta1","5.3.0","5.2.0","5.2.0-beta1","5.1.0","5.0.1","5.0.0","5.0.0-rc","5.0.0-beta2","5.0.0-beta1","5.0.0-alpha7"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63002.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"}]}