CVE-2026-14345 WPFunnels <= 3.12.7 - Unauthenticated Remote Code Execution via 'postData' Parameter
Unauthenticated attackers can execute arbitrary code on the server by injecting payloads into log files, provided logging is enabled and an admin views the log.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-14345?
CVE-2026-14345 is a critical code injection vulnerability in getwpfunnels WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell, published on 7 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-434
Which versions are affected by CVE-2026-14345?
How do I fix CVE-2026-14345?
No fix has been published for CVE-2026-14345 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-14345 being exploited?
There is no known exploitation of CVE-2026-14345 in the wild and no public exploit code.
Sources
Also known as GHSA-5fwf-q2jf-gp4v.