CVE-2026-33684 AVideo's Privilege Escalation via Unguarded Permission Parameters in signUp API Allows Self-Granting Upload/Stream/Meet Permissions
Attackers can self-grant elevated permissions like upload and streaming during registration by bypassing API authentication checks in AVideo.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-33684?
CVE-2026-33684 is a medium-severity vulnerability in WWBN AVideo, published on 15 Jul 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. Prior to version 29.0, Privilege Escalation is possible through unguarded permission parameters in signUp API, which allows any user who can solve a CAPTCHA to self-grant elevated permissions during account registration. The set_api_signUp method in the API plugin accepts emailVerified, canUpload, canStream, and canCreateMeet parameters from user-supplied input and applies them to newly created accounts without verifying that the request was authenticated with a valid APISecret. By self-granting account attributes, attackers can mark their own accounts as email-verified without owning the address (bypassing email-gated functionality) and award themselves upload, streaming, and meeting-creation permissions, circumventing administrator access controls that intentionally restrict these capabilities for new users. This issue has been fixed in version 29.0
Weakness: CWE-862
Which versions are affected by CVE-2026-33684?
2 open source packages ship an affected version, including wwbn/avideo.
| Package | Affected | Fixed in |
|---|---|---|
wwbn/avideo Packagist | All versions | 29.0 |
wwbn/avideo Packagist | All versions | 29.0 |
How do I fix CVE-2026-33684?
Upgrade wwbn/avideo to 29.0 or later.
Is CVE-2026-33684 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33684 exists.
Sources
Also known as GHSA-8j8m-p79x-g4jm.