The User Profile Builder WordPress plugin before 4.0.1 does not properly restrict its front-end file upload feature, granting unauthenticated visitors capabilities reserved to privileged roles. This allows them to list the site's media library and to modify unpublished posts, pages and media items belonging to other users.
https://wpscan.com/vulnerability/75e0611d-e11d-44f8-8fc1-7c40bb113f64/