CVE-2026-39369 PUBLISHED

WWBN AVideo's GIF poster fetch bypasses traversal scrubbing and exposes local files through public media URLs

Assigner: GitHub_M
Reserved: 06.04.2026 Published: 07.04.2026 Updated: 08.04.2026

WWBN AVideo is an open source video platform. In versions 26.0 and prior, objects/aVideoEncoderReceiveImage.json.php allowed an authenticated uploader to fetch attacker-controlled same-origin /videos/... URLs, bypass traversal scrubbing, and expose server-local files through the GIF poster storage path. The vulnerable GIF branch could be abused to read local files such as /etc/passwd or application source files and republish those bytes through a normal public GIF media URL.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
CVSS Score: 7.6

Product Status

Vendor WWBN
Product AVideo
Versions
  • Version <= 26.0 is affected

References

Problem Types

  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE