The Thumbnail carousel slider plugin for WordPress is vulnerable to Cross-Site Request Forgery in version 1.0. This is due to missing nonce validation on the deleteselected function. This makes it possible for unauthenticated attackers to delete sliders in bulk via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

The Thumbnail carousel slider WordPress plugin before 1.1.10 does not sanitise and escape some parameters before outputting them back in pages, leading to Reflected Cross-Site Scripting vulnerability which could be used against high privilege users such as admin.