getwpfunnels WPFunnels Plugin up to 3.12.7 Log wpfnl_show_log postData injection

Summaryinfo

A vulnerability has been found in getwpfunnels WPFunnels Plugin up to 3.12.7 and classified as problematic. The impacted element is the function wpfnl_show_log of the component Log Handler. This manipulation of the argument postData causes injection. This vulnerability appears as CVE-2026-14345. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in getwpfunnels WPFunnels Plugin up to 3.12.7. It has been declared as problematic. Affected by this vulnerability is the function wpfnl_show_log of the component Log Handler. The manipulation of the argument postData with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-14345 since 07/01/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are necessary for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/07/2026). The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-42009). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• getwpfunnels

Name

• WPFunnels Plugin

Version

• 3.12.0
• 3.12.1
• 3.12.2
• 3.12.3
• 3.12.4
• 3.12.5
• 3.12.6
• 3.12.7

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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