The User Registration, Login Form, User Profile & Membership WordPress plugin before 3.2.3 does not sanitise and escape the ppress_cc_data parameter before outputting it back in an attribute of an admin dashboard page, leading to a Reflected Cross-Site Scripting issue
https://wpscan.com/vulnerability/54ff0db8-1d9e-4e67-b71a-142a9e5ed851