BEAF < 4.5.5 - Cross-Site Request Forgery to Notice Dismissal

Description

The BEAF plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.5.4. This is due to missing or incorrect nonce validation on the bafg_new_feature_notice_dismissed() function. This makes it possible for unauthenticated attackers to dismiss notices via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.