Vulnerability Description
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 `$_POST` but protects the endpoint only with `User::isAdmin()`. It does not call `forbidIfIsUntrustedRequest()`, does not verify a `globalToken`, and does not validate the Origin/Referer header. Because AVideo intentionally sets `session.cookie_samesite=None` to support cross-origin iframe embedding, a logged-in administrator who visits an attacker-controlled page will have the browser auto-submit a cross-origin POST that rewrites the site's encoder URL, SMTP credentials, site `<head>` HTML, logo, favicon, contact email, and more in a single request. Commit f9492f5e6123dff0292d5bb3164fde7665dc36b4 contains a fix.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wwbn | Avideo | <= 29.0 |
Related Weaknesses (CWE)
References
- https://github.com/WWBN/AVideo/commit/f9492f5e6123dff0292d5bb3164fde7665dc36b4Patch
- https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqfExploitVendor Advisory
- https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqfExploitVendor Advisory
FAQ
What is CVE-2026-40925?
CVE-2026-40925 is a vulnerability with a CVSS score of 8.3 (HIGH). WWBN AVideo is an open source video platform. In versions 29.0 and prior, `objects/configurationUpdate.json.php` (also routed via `/updateConfig`) persists dozens of global site settings from `$_POST`...
How severe is CVE-2026-40925?
CVE-2026-40925 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40925?
Check the references section above for vendor advisories and patch information. Affected products include: Wwbn Avideo.