CVE-2026-33478criticalobserved exploitationCWE-284CWE-78

CVE-2026-33478: critical vulnerability in WWBN AVideo

AVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command Injection

Published

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70Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actcvss 10epss 13%
from disclosure to weapon
Published on NVDMar 23
VulnCheck+38d
In short

AVideo's CloneSite plugin has multiple security flaws that chain together: secret keys are exposed without a password, allowing attackers to dump the entire database and crack weak admin passwords, then execute arbitrary commands on the server.

Technical detail

The vulnerability chain involves unauthenticated exposure of clone keys via clones.json.php, database extraction through cloneServer.json.php, weak MD5 password hashing enabling credential compromise, and OS command injection in rsync command construction within cloneClient.json.php. An unauthenticated attacker can escalate from information disclosure to remote code execution with system-level privileges.

Summary generated and translated by AI from the official description.
WWBN AVideo is an open source video platform. In versions up to and including 26.0, multiple vulnerabilities in AVideo's CloneSite plugin chain together to allow a completely unauthenticated attacker to achieve remote code execution. The `clones.json.php` endpoint exposes clone secret keys without authentication, which can be used to trigger a full database dump via `cloneServer.json.php`. The dump contains admin password hashes stored as MD5, which are trivially crackable. With admin access, the attacker exploits an OS command injection in the rsync command construction in `cloneClient.json.php` to execute arbitrary system commands. Commit c85d076375fab095a14170df7ddb27058134d38c contains a patch.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
WWBN · AVideo
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