WooCommerce Pre-Orders < 2.0.3 - Unauthorised Actions via CSRF

The plugin has a flawed CSRF check when processing its tab actions, which could allow attackers to make logged in admins email pre-orders customer, change the released date, mark all pre-orders of a specific product as complete or cancel via CSRF attacks

PoC

Make a logged in admin open an HTML page with the form below (this will cancel all pre-orders for the product with ID 777)