Update the WordPress Sucuri Security plugin to the latest available version (at least 1.8.34).
Yeraisci discovered and reported this Cross Site Request Forgery (CSRF) vulnerability in WordPress Sucuri Security Plugin. This could allow a malicious actor to force higher privileged users to execute unwanted actions under their current authentication. For example a password change which will then allow the malicious actor to login into the admin account. This vulnerability has been fixed in version 1.8.34.