What is CVE-2026-40909?

CVE-2026-40909 is a high-severity vulnerability in Wwbn Avideo, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-04-21.

How severe is CVE-2026-40909?

High severity. CVSS v3 base score is 8.7 out of 10.

Path Traversal in Wwbn Avideo

CVE-2026-40909

WWBN AVideo is an open source video platform. In versions 29.0 and prior, the locale save endpoint (`locale/save.php`) constructs a file path by directly concatenating `$_POST['flag']` into the path at line 30 without any sanitization. The…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.002 (40.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.

Affected products

Wwbn Avideo — versions <= 29.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-6rc6-p838-686f (x_refsource_CONFIRM)
https://github.com/WWBN/AVideo/commit/57f89ffbc27d37c9d9dd727212334846e78ac21a (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-40909?: CVE-2026-40909 is a high-severity vulnerability in Wwbn Avideo, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-04-21.
How severe is CVE-2026-40909?: High severity. CVSS v3 base score is 8.7 out of 10.