REDAXO up to 5.21.1 Media Manager media_manager.php mediaIsInUse improper authorization

Summaryinfo

A vulnerability labeled as problematic has been found in REDAXO up to 5.21.1. This impacts the function mediaIsInUse of the file redaxo/src/addons/media_manager/lib/media_manager.php of the component Media Manager. The manipulation results in improper authorization. This vulnerability was named CVE-2026-63001. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in REDAXO up to 5.21.1. Affected is the function mediaIsInUse of the file redaxo/src/addons/media_manager/lib/media_manager.php of the component Media Manager. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-63001 since 07/15/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Additional levels of successful authentication are necessary for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

By approaching the search of inurl:redaxo/src/addons/media_manager/lib/media_manager.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 5.21.2 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• REDAXO

Version

• 5.21.0
• 5.21.1

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion