CVE-2026-4121

The Kcaptcha plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 1.0.1. This is due to missing nonce validation in the plugin's settings page handler admin/setting.php. The settings form does not include a wpnoncefield and the form processing code...

CVE-2026-4121 Kcaptcha <= 1.0.1 - Cross-Site Request Forgery to Settings Update

The Kcaptcha plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 1.0.1. This is due to missing nonce validation in the plugin's settings page handler admin/setting.php. The settings form does not include a wpnoncefield and the form processing code...