Input validation vulnerability in SellKit – Funnel builder and checkout optimizer for WooCommerce to sell more, faster 1.9.8

The SellKit plugin for WordPress, which helps WooCommerce users sell more effectively, has a security issue that allows hackers to insert harmful code into web pages. This can happen if the hacker has contributor-level access or higher. The plugin is not properly filtering and securing user input, which makes it vulnerable to a type of attack called Stored Cross-Site Scripting. This means that the plugin could potentially run malicious code whenever someone visits an affected page.