CVE-2026-90977

Clean Login < 1.19 - Unauthenticated CAPTCHA Bypass via Empty Session Comparison

Published Sep 18, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions clean Login
Vendors & Products Wordpress-extensions
Wordpress-extensions clean Login
Type Values Removed Values Added
Weaknesses CWE-697
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Clean Login < 1.19 - Unauthenticated CAPTCHA Bypass via Empty Session Comparison
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 18, 2026, 10:59 AM
Reserved
Sep 14, 2026, 1:40 PM
Status
Deferred
Published
Sep 18, 2026, 7:16 AM
Modified
Sep 18, 2026, 7:08 PM