CVE-2026-39369 WWBN AVideo's GIF poster fetch bypasses traversal scrubbing and exposes local files through public media URLs
Authenticated attackers can bypass traversal scrubbing to read local server files and expose them via public GIF URLs in WWBN AVideo.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-39369?
CVE-2026-39369 is a high-severity path traversal vulnerability in Wwbn Avideo, published on 7 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-39369?
2 open source packages ship an affected version, including WWBN/AVideo. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
WWBN/AVideo Packagist | All versions to 26.0 | None |
WWBN/AVideo Packagist | All versions to 26.0 | None |
Products include Wwbn Avideo.
How do I fix CVE-2026-39369?
No fix has been published for CVE-2026-39369 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-39369 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-39369 exists.
Other vulnerabilities in Wwbn Avideo
- CVE-2026-40911 WWBN AVideo YPTSocket WebSocket Broadcast Relay Leads to Unauthenticated Cross-User JavaScript Execution via Client-Side eval() Sinks
- CVE-2026-33478 AVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command Injection
- CVE-2022-30534 Command injection in AVideo
- CVE-2022-30547 Path traversal in AVideo
- CVE-2022-32572 Command injection in AVideo
Sources
Also known as GHSA-f4f9-627c-jh33.