The YITH Essential Kit for WooCommerce #1 plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'activate_module', 'deactivate_module', and 'install_module' functions in all versions up to, and including, 2.34.0. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install, activate, and deactivate plugins from a pre-defined list of available YITH plugins.