RCE in Wwbn Avideo
CVE-2026-33478
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.112 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.133 · newest: 0.112 · change: -0.020
Affected products
- Wwbn Avideo — versions <= 26.0
Weakness classification (CWE)
References
- github.com/WWBN/AVideo/security/advisories/GHSA-687q-32c6-8x68 (Exploit, Mitigation, Vendor Advisory)
- github.com/WWBN/AVideo/commit/c85d076375fab095a14170df7ddb27058134d38c (Patch)
Frequently asked questions
- What is CVE-2026-33478?
- CVE-2026-33478 is a critical-severity vulnerability in Wwbn Avideo, classified under OS Command Injection. CVSS score: 10.0/10. Published 2026-03-23.
- How severe is CVE-2026-33478?
- Critical severity. CVSS v3 base score is 10.0 out of 10.