The WP Activity Log 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_run_cleanup function. This makes it possible for unauthenticated attackers to invoke this function via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
The WP Activity Log Premium plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ajax_switch_db function in versions up to, and including, 4.5.0. This makes it possible for authenticated attackers with subscriber-level or higher to make changes to the plugin's settings.
The WP 2FA – Two-factor authentication for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.5.0 via the send_backup_codes_email due to missing validation on a user controlled key. This makes it possible for subscriber-level attackers to email arbitrary users on the site.