Authorization bypass through user-controlled key in AVideo - CVE-2026-89257
Published: November 11, 2026
Vulnerability identifier: #VU165931
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89257
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to delete other users' category asset directories, removing icons and images.
The vulnerability exists due to a missing category ownership check in AVideo's objects/categoryDeleteAssets.json.php when processing asset deletion requests with usersCanCreateNewCategories enabled. A remote user can submit a POST request containing a victim category ID and a valid CSRF token using an account with canUpload permission to recursively delete that category's assets without deleting category records or videos.
Affected software
AVideo
How to mitigate CVE-2026-89257
Install security update from vendor's website.
AVideo - update to 29.1.0