CVE-2026-33688 AVideo has Pre-Captcha User Enumeration and Account Status Disclosure in Password Recovery Endpoint

What is CVE-2026-33688?

CVE-2026-33688 is a medium-severity vulnerability in Wwbn Avideo, published on 23 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the password recovery endpoint at `objects/userRecoverPass.php` performs user existence and account status checks before validating the captcha. This allows an unauthenticated attacker to enumerate valid usernames and determine whether accounts are active, inactive, or banned — at scale and without solving any captcha — by observing three distinct JSON error responses. Commit e42f54123b460fd1b2ee01f2ce3d4a386e88d157 contains a patch.

Weakness: CWE-204

Which versions are affected by CVE-2026-33688?

2 open source packages ship an affected version, including wwbn/avideo. It affects 1 product.

Products include Wwbn Avideo.

How do I fix CVE-2026-33688?

No fix has been published for CVE-2026-33688 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-33688 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33688 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 Critical 10.0
• CVE-2026-33478 AVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command Injection Critical 10.0
• CVE-2022-30534 Command injection in AVideo Critical 9.9
• CVE-2022-30547 Path traversal in AVideo Critical 9.9
• CVE-2022-32572 Command injection in AVideo Critical 9.9

All Wwbn Avideo vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-m99f-mmvg-3xmx.