What the vulnerability does
01Description
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 Stored Cross-Site Scripting via the ‘mimes’ parameter in all versions up to, and including, 3.3.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
FunnelKit versions up to 3.3.1 contain a stored cross-site scripting vulnerability that allows authenticated users with low privileges to inject malicious scripts. These scripts execute in the browsers of other users, including administrators, potentially compromising site security. The vulnerability affects the plugin's funnel builder interface and persists across page loads.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers, including administrators, to steal data or perform actions on their behalf.
Potential impact on your site
04Site Impact
Authenticated attackers can compromise admin accounts, steal sensitive data, or modify site content through stored XSS attacks.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege WordPress account (e.g., subscriber or contributor role) to inject the payload.
Key dates
06Disclosure timeline
June 29, 2024
CVE published
April 8, 2026
Record updated
