Authorization bypass through user-controlled key in REDAXO - #VU140848
Published: August 4, 2026
Vulnerability identifier: #VU140848
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to modify arbitrary media files by moving them into a permitted category.
The vulnerability exists due to missing authorization in the media pool bulk move operation when processing selected files for category reassignment. A remote user can select files from categories they are not permitted to control and move them into a category they control to modify arbitrary media files by replacing their contents.
The issue affects authenticated backend sessions and does not require a crafted request or victim interaction.
Affected software
REDAXO
Remediation
Install security update from vendor's website.
REDAXO - update to 5.21.4