What is CVE-2026-40911?

CVE-2026-40911 is a critical-severity vulnerability in Wwbn Avideo, classified under Code Injection. CVSS score: 10.0/10. Published 2026-04-21.

How severe is CVE-2026-40911?

Critical severity. CVSS v3 base score is 10.0 out of 10.

RCE in Wwbn Avideo

CVE-2026-40911

WWBN AVideo is an open source video platform. In versions 29.0 and prior, the YPTSocket plugin's WebSocket server relays attacker-supplied JSON message bodies to every connected client without sanitizing the `msg` or `callback` fields. On…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.004 (62.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Wwbn Avideo — versions <= 29.0

Weakness classification (CWE)

CWE-94 — Code Injection

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-gph2-j4c9-vhhr (x_refsource_CONFIRM)
https://github.com/WWBN/AVideo/commit/c08694bf6264eb4decceb78c711baee2609b4efd (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-40911?: CVE-2026-40911 is a critical-severity vulnerability in Wwbn Avideo, classified under Code Injection. CVSS score: 10.0/10. Published 2026-04-21.
How severe is CVE-2026-40911?: Critical severity. CVSS v3 base score is 10.0 out of 10.