WP Simple Booking Calendar < 2.0.8.5 - Cross-Site Request Forgery

Description

The WP Simple Booking Calendar plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.8.4. This is due to missing or incorrect nonce validation on the wpsbc_refresh_calendar_editor function. This makes it possible for unauthenticated attackers to refresh the calendar editor via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.