CVE-2026-39440 WordPress FunnelFormsPro plugin <= 3.8.1 - Remote Code Execution (RCE) vulnerability

Q: What is CVE-2026-39440?

CVE-2026-39440 is a critical code injection vulnerability in FunnelFormsPro, published on 23 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Q: Is CVE-2026-39440 being exploited?

There is no known exploitation of CVE-2026-39440 in the wild and no public exploit code.

Q: How do I fix CVE-2026-39440?

No fix has been published for CVE-2026-39440 yet. Limit exposure of the affected software until one is available.

Critical 9.9 Published 23 Apr 2026 Updated 23 Apr 2026

Attackers can execute arbitrary code remotely via a code injection flaw in the FunnelFormsPro WordPress plugin.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-39440?

CVE-2026-39440 is a critical code injection vulnerability in FunnelFormsPro, published on 23 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper Control of Generation of Code ('Code Injection') vulnerability in Funnelforms LLC FunnelFormsPro allows Remote Code Inclusion.This issue affects FunnelFormsPro: from n/a through 3.8.1.

Weakness: CWE-94

Which versions are affected by CVE-2026-39440?

How do I fix CVE-2026-39440?

No fix has been published for CVE-2026-39440 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-2026-39440 being exploited?

There is no known exploitation of CVE-2026-39440 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-62r3-9jjw-5j78.