CVE-2026-0626: WPFunnels Stored XSS in wpf_optin_form shortcode

CVE-2026-0626 · Severity: medium · CVSS 6.4 · Published 2026-04-04

The WPFunnels plugin for WordPress, which is used to create sales funnels and lead generation forms, contains a security vulnerability. An attacker with basic contributor-level access can inject malicious scripts into website pages. These scripts will automatically run in the browser of any visitor who views the affected page, potentially leading to unauthorized actions or data theft.

Technologies: WPFunnels. Vendors: WPFunnels.

Quick answers

Is CVE-2026-0626 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-0626 being exploited in the wild.
How severe is CVE-2026-0626?
Medium severity, with a CVSS score of 6.4, published 4 April 2026.
Which products and versions are affected?
WPFunnels <= 3.7.9.
Is there a fix for CVE-2026-0626?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-0626 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-0626?
Check whether you run WPFunnels at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The WPFunnels plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the 'button_icon' parameter within the 'wpf_optin_form' shortcode. This vulnerability exists in all versions up to and including 3.7.9. An authenticated attacker with contributor-level permissions or higher can exploit this by injecting malicious JavaScript into a page via the shortcode. Because the script is stored on the server, it executes in the context of any user's browser session when they navigate to the affected page. A patch appears to have been addressed in changeset 3439366.

Affected products

  • getwpfunnels WPFunnels – Easy Funnel Builder To Optimize Buyer Journeys And Get More Leads & Sales <= 3.7.9

Timeline

  • 2026-04-04: disclosed
  • 2026-04-04: advisory

References

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