What is CVE-2026-39440?

CVE-2026-39440 is a critical-severity vulnerability in Funnelforms Llc Funnelformspro, classified under Code Injection. CVSS score: 9.9/10. Published 2026-04-23.

How severe is CVE-2026-39440?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Is CVE-2026-39440 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Funnelforms Llc Funnelformspro

CVE-2026-39440

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.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.000 (6.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Funnelforms Llc Funnelformspro — versions n/a

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

3ele-projects/cve-2026-39440-funnelforms-fix

References

patchstack.com/database/wordpress/plugin/funnelforms-pro/vulnerability/wordpres… (vdb-entry)

Frequently asked questions

What is CVE-2026-39440?: CVE-2026-39440 is a critical-severity vulnerability in Funnelforms Llc Funnelformspro, classified under Code Injection. CVSS score: 9.9/10. Published 2026-04-23.
How severe is CVE-2026-39440?: Critical severity. CVSS v3 base score is 9.9 out of 10.
Is CVE-2026-39440 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.