Unauthenticated Cross Site Scripting (XSS) in Redirection for Contact Form 7 <= 3.2.8 versions.
The Redirection for Contact Form 7 plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'movefiletoupload' function in all versions up to, and including, 3.2.7. This makes it possible for unauthenticated attackers to copy arbitrary files on the affected site's server. If 'allowurlfopen' is set to 'On', it is possible to upload a remote file to the server.