a3 Responsive Slider <= 2.1.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting

The a3 Responsive Slider plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.1.0. This is due to missing or incorrect nonce validation on the slider_form_action function. This makes it possible for unauthenticated attackers to inject malicious JavaScript, that will execute whenever a user accesses an injected page, via forged request granted they can trick a site administrator into performing an action such as clicking on a link.