CVE-2026-63001
mediumREDAXO is a PHP-based content management system.
Vendor / product: Redaxo — redaxo
REDAXO is a PHP-based content management system. Prior to 5.21.2, the mediaIsInUse() handler in redaxo/src/addons/media_manager/lib/media_manager.php inserts a Media Manager type name into raw backend warning HTML without escaping it when invoked through MEDIA_IS_IN_USE. An administrator with Media Manager access can store HTML in a type name, and the payload executes in another administrator's browser when that administrator tries to delete media referenced by the type's effects, enabling session theft or unauthorized backend actions. This issue is fixed in version 5.21.2.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c security-advisories@github.com
- https://github.com/redaxo/core/pull/6581 security-advisories@github.com
- https://github.com/redaxo/core/releases/tag/5.21.2 security-advisories@github.com
- https://github.com/redaxo/core/security/advisories/GHSA-mf2p-wjp4-99pq security-advisories@github.com