CVE-2026-4131: Cross-Site Request Forgery (CSRF)

The WP Responsive Popup + Optin plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 1.4. This is due to the settings form on the admin page wpoadminpage.php lacking nonce generation wpnoncefield and verification wpverifynonce/checkadminreferer. Thi...