WordPress security changelog
CRITICAL CVE-2026-14345 Deferred

WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell: Code execution

WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell is affected by code execution. The vulnerable path is reachable without authentication. Successful exploitation can run attacker-controlled code in the WordPress hosting account. The published affected range is <= 3.12.7.

CVE / CNA score 9.8 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell
Plugin slug
wpfunnels
Affected
<= 3.12.7
Safe version
> 3.12.7
Published
Jul 07, 2026
Weakness
CWE-434 — Unrestricted Upload of File with Dangerous Type

This CVE was published Jul 07, 2026 and is one of 10 known issues for this plugin.

What to do

Update, patch or deactivate.

Update WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell to a release after 3.12.7, or disable and remove it until a fixed version is available.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical 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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Primary and upstream sources