CVE-2026-86189

Critical

Description

WWBN AVideo contains a path traversal vulnerability in notify.ffmpeg.json.php that allows unauthenticated attackers to write files to arbitrary locations by supplying a caller-chosen path in the avideoRelativePath parameter. Attackers can replay any previously issued ciphertext as a notifyCode token, which is decrypted but never validated, to bypass authentication and write files to the application root and subdirectories.

SeverityCritical

CVSS9.8

Exploit probability—

ProductAVideo

PublishedSep 5, 2026

First seenSep 5, 2026

Weakness typeCWE-73CWE-73

How to fix

Vendor advisories

github.com/WWBN/AVideo/security/advisories/GHSA-cprx-fggj-7vpq

Affected products

Product	Affected versions	Fixed in
WWBN AVideo	v ≤ 29.0	—

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