Overly permissive cross-domain whitelist in AVideo - CVE-2026-41056
Published: November 11, 2026
Vulnerability identifier: #VU165912
CSH Severity: High
CVSS v4: 8.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-41056
CWE-ID: CWE-942
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to steal personal information and livestream credentials and perform unauthorized account changes.
The vulnerability exists due to a permissive cross-origin policy in AVideo's allowOrigin(true) function when sensitive API endpoints reflect arbitrary origins with Access-Control-Allow-Credentials: true. A remote attacker can lure a logged-in victim to a malicious page that sends credentialed requests using SameSite=None session cookies to read authenticated responses and invoke state-changing API operations.
Affected software
AVideo
How to mitigate CVE-2026-41056
Install security update from vendor's website.
AVideo - update to 29.1.0