Custom Order Statuses for WooCommerce <= 1.5.2 - Cross-Site Request Forgery

Description

The Custom Order Statuses for WooCommerce plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.5.2. This is due to missing or incorrect nonce validation on multiple functions. This makes it possible for unauthenticated attackers to modify order statuses via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.