What the vulnerability does
01Description
The WPFunnels – Easy Funnel Builder To Optimize Buyer Journeys And Get More Leads & Sales plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpf_optin_form' shortcode in all versions up to, and including, 3.7.9 due to insufficient input sanitization and output escaping of the 'button_icon' parameter. 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
WPFunnels versions up to 3.7.9 contain a stored cross-site scripting (XSS) vulnerability that allows authenticated users with low privileges to inject malicious scripts. These scripts execute in the browsers of other site visitors, potentially compromising their sessions or stealing data. The vulnerability affects the entire site scope due to how the plugin processes and displays user input.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers and steal their session data or perform actions on their behalf.
Potential impact on your site
04Site Impact
Authenticated users can inject persistent malicious code affecting all site visitors, risking account compromise and data theft across your WooCommerce funnel.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege authenticated account (e.g., subscriber or contributor role) on the WordPress site.
Key dates
06Disclosure timeline
April 4, 2026
CVE published
April 8, 2026
Record updated
