VulnerabilityAnalyzed

CVE-2026-33688

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.

MEDIUM 5.3EPSS 0.28%

Does this matter?

Lower severity and a low EPSS score (0.28%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS: 0.28% probability · 20th percentile
CISA KEV: Not listed
Weakness: CWE-204
Affected: wwbn/avideo
Source: security-advisories@github.com

References

https://github.com/WWBN/AVideo/commit/e42f54123b460fd1b2ee01f2ce3d4a386e88d157Patch
https://github.com/WWBN/AVideo/security/advisories/GHSA-m99f-mmvg-3xmxExploit, Vendor Advisory
https://github.com/WWBN/AVideo/security/advisories/GHSA-m99f-mmvg-3xmxExploit, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.