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CVE-2026-14345

CRITICAL 9.8 CVSS 3.1
Published
July 7, 2026
Last modified
July 8, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-434
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 3.12.7 via the 'postData' parameter parameter. This is due to unsanitized write of attacker-controlled postData values into a PHP-includeable .log file combined with the use of include_once to render that file in wpfnl_show_log. This makes it possible for unauthenticated attackers to execute code on the server. Exploitation requires that the Log Settings "Enable Logs" toggle is on and that an administrator subsequently opens the polluted log file via the plugin's Log Settings View UI; however, the nonce required to reach the optin endpoint is publicly emitted on every funnel step page, so the injection step itself is fully unauthenticated.

Affected WordPress components

  • WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell Plugin · wpfunnels
    Confirmed match Active
    Up to and including 3.12.7
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • getwpfunnels WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell — Up to and including 3.12.7

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.5/admin/modules/settings/class-wpfnl-settings.php#L709
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.5/includes/core/classes/class-wpfnl-ajax-handler.php#L39
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.5/includes/core/classes/class-wpfnl-ajax-handler.php#L523
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.5/public/class-wpfnl-public.php#L1185
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.7/admin/modules/settings/class-wpfnl-settings.php#L709
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.7/includes/core/classes/class-wpfnl-ajax-handler.php#L39
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.7/includes/core/classes/class-wpfnl-ajax-handler.php#L523
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.7/public/class-wpfnl-public.php#L1185
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3597260/wpfunnels/trunk/admin/modules/settings/class-wpfnl-settings.php
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?old_path=%2Fwpfunnels/tags/3.12.7&new_path=%2Fwpfunnels/tags/3.12.8
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/5d84d749-0ab5-49dd-8e4f-45681f197742?source=cve
  • nvd.nist.gov Official NVD record