CVE-2026-0626: WPFunnels <= 3.7.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'wpf_optin_form' Shortcode
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 'wpfoptinform' shortcode in all versions up to, and including, 3.7.9 due to insufficient input sanitization and output escaping of the 'buttonicon' 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
wordpress/WPFunnels – Easy Funnel Builder To Optimize Buyer Journeys And Get More Leads & Salesto a version that resolves this vulnerability.Fixed in 3.7.9 - Configuration
Modify the plugin’s handling of the 'button_icon' parameter used by the 'wpf_optin_form' shortcode to ensure proper input sanitization and output escaping, eliminating the stored XSS condition present in versions up to and including 3.7.9.
WordPress (WPFunnels) wpf_optin_form shortcode parameter 'button_icon' = Sanitize input and escape output for 'button_icon' before rendering (prevent stored XSS)
Event History
Frequently Asked Questions
What is the severity of CVE-2026-0626?
CVE-2026-0626 has a medium severity rating due to the potential for Stored Cross-Site Scripting attacks.
How do I fix CVE-2026-0626?
To fix CVE-2026-0626, update the WPFunnels plugin to version 3.8.0 or later.
What types of attacks can CVE-2026-0626 enable?
CVE-2026-0626 can enable attackers to execute malicious scripts in the context of the user's browser.
Who is affected by CVE-2026-0626?
Users of WPFunnels versions 3.7.9 and earlier who are authenticated as Contributors or higher are affected by CVE-2026-0626.
What is WPFunnels in relation to CVE-2026-0626?
WPFunnels is a WordPress plugin that allows users to create optimized funnels and is the software affected by CVE-2026-0626.