CVE-2026-91966 AVideo through 29.0 Unauthenticated SSRF via Host Header
Unauthenticated attackers can exploit SSRF in AVideo to probe internal network hosts and ports via manipulated Host headers.
- 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-2026-91966?
CVE-2026-91966 is a medium-severity server-side request forgery vulnerability in WWBN AVideo, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
AVideo through 29.0 contains an unauthenticated server-side request forgery vulnerability in the check_site_availability function that accepts attacker-controlled HTTP Host headers. Attackers can send requests to submitIndex.php or ajax.php with arbitrary Host headers to probe internal network hosts and ports, following redirects without authentication.
Weakness: CWE-918
Which versions are affected by CVE-2026-91966?
How do I fix CVE-2026-91966?
No fix has been published for CVE-2026-91966 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-91966 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91966 exists.
Sources
Also known as GHSA-5ccr-67rq-v275, GHSA-rqg6-qcjv-55w5.