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Vulnerabilities CVE-2026-39369

CVE-2026-39369

High
Open
TLP:CLEAR

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

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Description

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.

Details

CVSS Score
7.6
EPSS Score
0.41%

34.1th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
Confidence
90%
Published
Apr 7, 2026
Last Modified
May 14, 2026
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