Spam protection, AntiSpam, FireWall by CleanTalk <= 6.10 - Missing Authorization

The Spam protection, AntiSpam, FireWall by CleanTalk plugin for WordPress is vulnerable to unauthorized access and modification of data due to a missing capability check on several functions along with nonce disclosure in versions up to, and including, 6.10. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify/export/import templates and trash/spam/modify comments among some other actions.