CVE-2026-86189
Critical · CVSS 9.3Published 2026-09-05
CVSS
9.3
Critical
EPSS
—
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-86189?
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.
CVSS Score Explained
CVSS 9.3 is Critical — the highest severity tier. Attackers can likely exploit this remotely with no authentication and cause full system compromise. Patch immediately.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- ›https://github.com/WWBN/AVideo/security/advisories/GHSA-cprx-fggj-7vpq
- ›https://www.vulncheck.com/advisories/wwbn-avideo-unauthenticated-path-traversal-via-notify-ffmpeg-json-php
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