Book a Room <= 2.9 - Cross-Site Request Forgery to Settings Update

The Book a Room plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.9. This is due to missing or incorrect nonce validation on the 'bookaroom_Settings' page. This makes it possible for unauthenticated attackers to update 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.