The Master Addons – Free Widgets, Hover Effects, Toggle, Conditions, Animations for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘url’ parameter in versions up to, and including, 2.0.5.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.