Redirect Redirection <= 1.1.3 - Cross-Site Request Forgery via 'addRedirect' function

The Redirect Redirection plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.1.3. This is due to missing or incorrect nonce validation on the addRedirect function. This makes it possible for unauthenticated attackers to add redirects, via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.