Social Share Boost <= 4.5 is vulnerable to Cross Site Request Forgery (CSRF) vulnerability

The Social Share Boost plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.5. This is due to missing or incorrect nonce validation on the 'syntatical_settings_content' function. This makes it possible for unauthenticated attackers to change the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.