The Events Calendar < 6.5.1.5 - Cross-Site Request Forgery via action_restore_events

Description

The The Events Calendar plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 6.5.1.4. This is due to missing or incorrect nonce validation on the action_restore_events() function. This makes it possible for unauthenticated attackers to restore events via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.