Critical severity · published Sep 5, 2026
CVE-2026-86189
WWBN AVideo Unauthenticated Path Traversal via notify.ffmpeg.json.php
9.8
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
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
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AV
AVideo · WWBN
through 29.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86189
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86189
github.com
https://github.com/WWBN/AVideo/security/advisories/GHSA-cprx-fggj-7vpq
www.vulncheck.com
https://www.vulncheck.com/advisories/wwbn-avideo-unauthenticated-path-traversal-via-notify-ffmpeg-json-php
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AVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command Injection
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CVE-2022-30547
A directory traversal vulnerability exists in the unzipDirectory functionality of WWBN AVideo 11.6 and dev master commit 3f7c0364
9.8
CVE-2026-85154
WWBN AVideo Authentication Bypass via Non-Expiring video_id_hash
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CVE-2026-84480
WWBN AVideo Password Recovery Token Expiration Bypass