The Team Circle Image Slider With Lightbox plugin for WordPress is vulnerable to SQL Injection via the 'id' parameter in all versions up to, and including, 1.0.4 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with Administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The Team Circle Image Slider With Lightbox plugin for WordPress is vulnerable to Cross-Site Request Forgery in version 1.0. This is due to missing or incorrect nonce validation on the circlethumbnailsliderwithlightboximagemanagementfunc() function. This makes it possible for unauthenticated attackers to edit image data which can be used to inject malicious JavaScript, along with deleting images, and uploading malicious files via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

The Team Circle Image Slider With Lightbox WordPress plugin before 1.0.16 does not sanitize and escape the orderpos parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting.