The Woocommerce Multiple Addresses plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.0.7.1. This is due to insufficient restrictions on user meta that can be updated through the savemultipleshippingaddresses() function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to that of an administrator.

The Multiple Shipping Address Woocommerce WordPress plugin before 2.0 does not properly sanitise and escape numerous parameters before using them in SQL statements via some AJAX actions available to unauthenticated users, leading to unauthenticated SQL injections