The Prime Slider – Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'followustext' setting of the Mount widget in all versions up to, and including, 4.1.10. This is due to insufficient input sanitization and output escaping. Specifically, the rendersociallink() function in modules/mount/widgets/mount.php outputs the followustext Elementor widget setting using echo without any escaping function. The setting value is stored in elementordata post meta via updatepostmeta. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.