The Happy Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the before_label parameter in the Image Comparison widget in all versions up to, and including, 3.12.5 due to insufficient input sanitization and output escaping. 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 accesses an injected page.

Missing Authorization vulnerability in Leevio Happy Addons for Elementor allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Happy Addons for Elementor: from n/a through 3.12.3.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Leevio Happy Addons for Elementor allows Stored XSS.This issue affects Happy Addons for Elementor: from n/a through 3.12.0.

The Happy Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's PDF View widget in all versions up to, and including, 3.11.2 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 accesses an injected page.

The Happy Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'arrow' attribute within the plugin's Post Navigation widget in all versions up to, and including, 3.10.9 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 accesses an injected page.

The Happy Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘ha-ia-content-button’ parameter in all versions up to, and including, 3.10.9 due to insufficient input sanitization and output escaping. 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 accesses an injected page.

The Happy Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘_id’ parameter in all versions up to, and including, 3.10.8 due to insufficient input sanitization and output escaping. 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 accesses an injected page.

The Happy Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘_id’ parameter in all versions up to, and including, 3.10.8 due to insufficient input sanitization and output escaping. 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 accesses an injected page.

The Happy Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's Event Calendar widget in all versions up to, and including, 3.10.7 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 accesses an injected page.

The Happy Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Image Stack Group widget in all versions up to, and including, 3.10.7 due to insufficient input sanitization and output escaping on user supplied 'tooltip_position' attribute. 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 accesses an injected page.