Input validation vulnerability in One Click Upsell Funnel for WooCommerce – Funnel Builder for WordPress, Create WooCommerce Upsell, Post-Purchase Upsell & Cross Sell Offers that Boost Sales & Increase Profits with Sales Funnel Builder 3.4.9

The One Click Upsell Funnel for WooCommerce is a tool for WordPress that helps increase sales and profits by creating offers for customers to purchase additional products after their initial purchase. However, it has been found to have a security vulnerability called Stored Cross-Site Scripting. This means that attackers with a certain level of access can inject harmful code into pages, which can be executed when a user visits the page.