Path Traversal Vulnerability in WWBN AVideo Video Streaming Platform
CVE-2026-86189

9.3CRITICAL

Key Information:

Vendor

Wwbn

Status
Avideo
Vendor
CVE Published:
5 September 2026

What is CVE-2026-86189?

WWBN AVideo contains a path traversal vulnerability within the notify.ffmpeg.json.php file. This flaw enables unauthenticated attackers to manipulate the avideoRelativePath parameter to write files to arbitrary locations on the server. Additionally, attackers can exploit the notifyCode token mechanism to bypass authentication by replaying previously issued ciphertexts, granting them the ability to write files directly into the application root and its subdirectories.

Affected Version(s)

AVideo 0 <= 29.0

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-c...
vendor-advisory
https://www.vulncheck.com/advisories/wwbn-avideo-unauthen...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

rajivraj
.