The WP Force SSL & HTTPS SSL Redirect plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'ajax_save_setting' function in versions up to, and including, 1.66. This makes it possible for authenticated attackers, subscriber-level permissions and above, to update the plugin settings.
https://swisskyrepo.github.io/PayloadsAllTheThings/CRLF%20Injection/
https://plugins.trac.wordpress.org/changeset/3099110/
https://plugins.trac.wordpress.org/browser/wp-force-ssl/tags/1.66/wp-force-ssl.php#L953