Epeken All Kurir <= 2.1.4 - Unauthenticated Order Payment Confirmation Forgery

The Epeken All Kurir for Woocommerce WordPress plugin through 2.1.4 does not verify that a payment-confirmation request originates from the owner of the targeted order, nor that any payment actually occurred, allowing unauthenticated attackers to mark arbitrary orders as confirmed and, in a non-default configuration, paid.