KeyCAPTCHA <= 2.5.1 - Cross-Site Request Forgery to Stored Cross-Site Scripting

Description

The KeyCAPTCHA – Social WordPress CAPTCHA plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.5.1. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.