Redirection for Contact Form 7 <= 2.7.0 - Authenticated(Editor+) Privilege Escalation

The Redirection for Contact Form 7 plugin is vulnerable to Authenticated Privilege Escalation in versions up to, and including, 2.7.0 due to the ability to update usermeta information. This allows authenticated attackers with Editor-level permissions and above to modify their permissions and grant themselves administrator privileges.