What the vulnerability does
01Description
The 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 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's wps_wocuf_pro_yes shortcode in all versions up to, and including, 3.4.9 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-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
The One Click Upsell Funnel for WooCommerce plugin contains a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. These scripts execute in the browsers of other site visitors, potentially compromising their sessions or stealing sensitive data. The vulnerability affects all versions up to 3.4.9 and requires a logged-in account to exploit.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers and steals their session data or credentials.
Potential impact on your site
04Site Impact
Authenticated users can compromise other visitors' accounts and data; customer trust and site security are at risk.
Conditions required to exploit
05Prerequisites
Attacker must have a logged-in account on the site (low privilege level); no user interaction required from victims.
Key dates
06Disclosure timeline
December 21, 2024
CVE published
April 8, 2026
Record updated
