WP Activity Log Premium <= 4.5.0 - Cross-Site Request Forgery via ajax_switch_db

The WP Activity Log Premium plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.5.0. This is due to missing or incorrect nonce validation on the ajax_switch_db function. This makes it possible for unauthenticated attackers to make changes to 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.