Vulnerability · Published Sep 18, 2026 · Assigned by WPScan
CVE-2026-90977Clean Login < 1.19 - Unauthenticated CAPTCHA Bypass via Empty Session Comparison
Medium 5.3
In plain English
A medium-severity security flaw in Clean Login from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.4%top 68.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The Clean Login WordPress plugin before 1.19 does not verify its registration CAPTCHA when the stored session value is empty, allowing unauthenticated users to bypass the anti-automation control on the registration form and create accounts without solving it.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Clean Login | 0 – before 1.19 |
Weakness: CWE-697 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://wpscan.com/vulnerability/368db83e-ed7b-4f67-99db-2e5f1c01568e/ exploit, vdb-entry, technical-description