The Funnel Builder for WordPress by FunnelKit – Customize WooCommerce Checkout Pages, Create Sales Funnels, Order Bumps & One Click Upsells plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on multiple functions in all versions up to, and including, 3.4.6. This makes it possible for authenticated attackers, with Contributor-level access and above, to update multiple settings, including templates, designs, checkouts, and other plugin settings.