WP Directory Kit <= 1.1.9 - Cross-Site Request Forgery to Stored Cross-Site Scripting via wdk_resultitem

The WP Directory Kit plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.1.9. This is due to missing or incorrect nonce validation on the 'insert' function. This makes it possible for unauthenticated attackers to update the plugin's settings and inject malicious JavaScript via a forged request, granted they can trick a site administrator into performing an action such as clicking on a link.