CVE-2026-90543 WWBN AVideo Missing Authentication via socketMessageLiveOwner.json.php
Unauthenticated attackers can send arbitrary socket notifications to administrators if the Live plugin is enabled and stream keys are known.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90543?
CVE-2026-90543 is a medium-severity missing authorization vulnerability in WWBN AVideo, published on 12 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
WWBN AVideo at commit c3edcc274c389816d434acadac07ee78eaf330c1 and earlier, with the Live plugin enabled, contains a missing authentication vulnerability in plugin/Live/socketMessageLiveOwner.json.php. The script reads the `key` and `msg` parameters from $_REQUEST, resolves the stream owner via LiveTransmition::keyExists, and verifies that the stream owner (not the caller) is an administrator; it performs no User::isLogged() check and enforces no CSRF token. As a result, an unauthenticated remote attacker who knows an administrator's Live stream key can call sendSocketSuccessMessageToUsers_id and deliver arbitrary in-app/socket notification messages to that administrator. The issue was unpatched at the time of publication.
Weakness: CWE-306
Which versions are affected by CVE-2026-90543?
How do I fix CVE-2026-90543?
No fix has been published for CVE-2026-90543 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-2026-90543 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90543 exists.
Sources
Also known as GHSA-jhqv-wm6m-mvj2.