Social Share Buttons by Supsystic <= 2.2.3 is vulnerable to Multiple Broken Access Control vulnerabilities

The Social Share Buttons by Supsystic plugin for WordPress is vulnerable to authorization bypass due to missing capability checks on various functions in versions up to, and including, 2.2.3. This makes it possible for authenticated attackers with subscriber level permissions and above to perform a wide variety of actions such as modifying the plugin's settings.