CVE-2026-40925

WWBN AVideo is an open source video platform. In versions 29.0 and prior, `objects/configurationUpdate.json.php` (also routed via `/updateConfig`) persists dozens of global site settings from `$_POST` but protects the endpoint only with `User::isAdmin()`. It does not call `forbidIfIsUntrustedRequest()`, does not verify a `globalToken`, and does not validate the Origin/Referer header. Because AVideo intentionally sets `session.cookie_samesite=None` to support cross-origin iframe embedding, a logged-in administrator who visits an attacker-controlled page will have the browser auto-submit a cross-origin POST that rewrites the site's encoder URL, SMTP credentials, site `<head>` HTML, logo, favicon, contact email, and more in a single request. Commit f9492f5e6123dff0292d5bb3164fde7665dc36b4 contains a fix.

CVSS v3 8.3 HIGH

8.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/WWBN/AVideo/commit/f9492f5e6123dff0292d5bb3164fde7665dc36b4	Patch
https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqf	Exploit Vendor Advisory
https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqf	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-21 21:16

Updated : 2026-06-17 10:45

NVD link : CVE-2026-40925

Mitre link : CVE-2026-40925

CVE.ORG link : CVE-2026-40925

JSON object : View

Products Affected

wwbn

avideo

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

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