Input validation vulnerability in WooCommerce Checkout Field Editor (Checkout Manager) 2.1.8

The Checkout Manager plugin for WordPress, also known as the WooCommerce Checkout Field Editor, has a security issue. This makes it vulnerable to a type of attack called Cross-Site Request Forgery. Basically, this means that someone who is not authorized to make changes to the plugin can trick a site administrator into making changes for them. This could happen if the administrator clicks on a link that was sent by the attacker. This issue exists in versions up to 2.1.8 of the plugin.