Sinking Dropdowns <= 1.25 is vulnerable to CSRF to Privilege Escalation vulnerability

The Sinking Dropdowns plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.25. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to elevate their privileges via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.