DethemeKit For Elementor <= 2.1.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via URL Parameter of the De Gallery Widget

The DethemeKit For Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the URL parameter of the De Gallery widget in all versions up to and including 2.1.5 due to insufficient input sanitization and output escaping on user-supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user clicks on the injected link.