CVE-2026-33688 Details
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.
A vulnerability exists in WWBN AVideo versions through 26.0 in the password recovery endpoint `objects/userRecoverPass.php`. The issue arises because the endpoint checks for user existence and account status before validating the captcha. This flaw allows an unauthenticated attacker to enumerate valid usernames and assess account statuses (active, inactive, or banned) without solving any captcha, by analyzing three different JSON error responses. The vulnerability can be exploited at scale, as the endpoint lacks rate limiting or brute force protection.
Users can update to the patched version of AVideo, which includes the necessary captcha validation before user checks. Instructions for updating can be found in the AVideo repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 24, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/WWBN/AVideo/security/advisories/GHSA-m99f-mmvg-3xmx | CISA-ADP | ExploitVendor Advisory |
| https://github.com/WWBN/AVideo/commit/e42f54123b460fd1b2ee01f2ce3d4a386e88d157 | [email protected] | Patch |
| https://github.com/WWBN/AVideo/security/advisories/GHSA-m99f-mmvg-3xmx | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-204 | Observable Response Discrepancy | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wwbn avideo | <= 26.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 25, 2026 | Initial Analysis | [email protected] |
| Mar 24, 2026 | CVE Modified | CISA-ADP |
| Mar 23, 2026 | New CVE Received | [email protected] |