CVE-2026-86189

CRITICAL

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 v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 9/5/2026Modified: 9/5/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-86189 — WWBN AVideo contains a path traversal vulnerability in notify.ffmpeg.json.php th...

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 applicatio

CVE-2026-86189
NIST NVD

References (2)

https://github.com/WWBN/AVideo/security/advisories/GHSA-cprx-fggj-7vpqhttps://www.vulncheck.com/advisories/wwbn-avideo-unauthenticated-path-traversal-via-notify-ffmpeg-json-php