Mail Debug for WooCommerce <= 1.3.0 - Unauthenticated Sent Email Disclosure Leading to Account Takeover

The Mail Debug for WooCommerce WordPress plugin through 1.3.0 does not perform any capability, authentication, or nonce check on one of its email-logging actions, which is exposed to unauthenticated users and is not restricted to its own data, allowing anyone to read the full body of every email the site has sent, including password-reset emails whose reset key lets an attacker take over an administrator account.