The Easiest Funnel Builder For WordPress & WooCommerce by WPFunnels plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'post_id' parameter in all versions up to, and including, 3.5.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. This was partially patched in 3.5.4 and fully patched in 3.5.5.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPFunnels Team WPFunnels allows Stored XSS.This issue affects WPFunnels: from n/a through 3.0.6.

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in WPFunnels Team Drag & Drop Sales Funnel Builder for WordPress – WPFunnels plugin <= 2.7.16 versions.

The Drag & Drop Sales Funnel Builder for WordPress plugin before 2.6.9 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.