Server-Side Request Forgery (SSRF) in AVideo - CVE-2026-91967
Published: November 11, 2026
Vulnerability identifier: #VU165933
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N]
CVE-ID: CVE-2026-91967
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to issue blind server-side requests to internal and cloud-metadata hosts and infer limited content-type and reachability information.
The vulnerability exists due to missing destination validation in AVideo's getHeaderContentTypeFromURL() when probing stored video links with get_headers(), which also follows redirects to internal hosts. A remote user can use canUpload permission to submit videoLink=http://[internal-host]/x.mp4 and open the resulting video's watch page to trigger requests and observe content-type, status, and timing signals.
Affected software
AVideo
How to mitigate CVE-2026-91967
Install security update from vendor's website.
AVideo - update to 29.1.0