CVE-2026-89252 AVideo Missing Authorization in addLiveLink.php LiveLink Update
Authenticated users can modify other users' LiveLinks due to missing ownership checks, allowing redirection of viewers to attacker-controlled media.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-89252?
CVE-2026-89252 is a high-severity missing authorization vulnerability in WWBN AVideo, published on 11 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to verify ownership in addLiveLink.php when updating LiveLinks, allowing authenticated users to modify other users' links. A canStream user can overwrite another user's LiveLink HLS source and metadata by supplying an existing linkId, redirecting viewers to attacker-controlled media.
Weakness: CWE-639
Which versions are affected by CVE-2026-89252?
How do I fix CVE-2026-89252?
No fix has been published for CVE-2026-89252 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-89252 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89252 exists.
Sources
Also known as GHSA-m2c6-f5ww-j26v, GHSA-pr7w-97g9-f8rw.