The User Profile Builder WordPress plugin before 3.16.4 does not correctly bind the automatic login performed after user registration to the newly created account, allowing unauthenticated attackers to obtain an authenticated session for an arbitrary existing user, including administrators, on sites using a supported but non-default configuration.

The User Profile Builder WordPress plugin before 3.11.8 does not have proper authorisation, allowing unauthenticated users to upload media files via the async upload functionality of WP.