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CVE-2026-40925 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.3 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqf	CISA-ADP	ExploitVendor Advisory
https://github.com/WWBN/AVideo/commit/f9492f5e6123dff0292d5bb3164fde7665dc36b4	[email protected]	Patch
https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqf	[email protected]	ExploitVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-352	Cross-Site Request Forgery (CSRF)	[email protected]

Affected Products

Product	Versions
wwbn avideo	<= 29.0
CPE cpe:2.3:a:wwbn:avideo:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 24, 2026	Initial Analysis	[email protected]
Apr 21, 2026	New CVE Received	[email protected]
Apr 21, 2026	CVE Modified	CISA-ADP