CVE-2026-63001

Description

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.

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Produits concernés

• redaxo core
• Redaxo redaxo

Scores CVSS

Faiblesses (CWE)

• CWE-79

Références

• https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c Patch
• https://github.com/redaxo/core/pull/6581 Issue TrackingPatch
• https://github.com/redaxo/core/releases/tag/5.21.2 Release Notes
• https://github.com/redaxo/core/security/advisories/GHSA-mf2p-wjp4-99pq ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories