CVE-2026-63002
REDAXO: Stored XSS in Mediapool Sync Page via Unescaped Filesystem Filenames
MEDIUM 4.8EPSS 0.2%
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
- redaxo · core
- CVSS v3.1 GITHUB
- 4.8 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - EPSS
- 0.18% chance of exploitation in the next 30 days, 7th percentile
- Published
- 2026-09-23
- Updated
- 2026-09-24