The Ultimate Addons for Elementor (Formerly Elementor Header & Footer Builder) plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_hfe_compatibility_option_callback ()function in all versions up to, and including, 2.4.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update the compatibility option setting.

The Elementor Header & Footer Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘size’ parameter in all versions up to, and including, 1.6.46 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.