CVE-2026-40925HIGH 8.3EPSS p6.9%

CVE-2026-40925CVE-2026-40925

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.

Scoring

CVSS 3.18.3 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
EPSS0.17% probability of exploitation · percentile 6.9% · 2026-06-19T12:03:05Z
Published2026-04-21
Last modified2026-04-24

Underlying weaknesses· 1

CWE-352

References

  1. https://github.com/WWBN/AVideo/commit/f9492f5e6123dff0292d5bb3164fde7665dc36b4
  2. https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqf
  3. https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqf

1

TypeTargetConfidenceTier
WeaknessCross-Site Request Forgery (CSRF)cwe-3520%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.