What is CVE-2025-3439?

CVE-2025-3439 is a critical-severity vulnerability in Wpeverest Everest Forms – Contact Form, Payment Quiz, Survey & Custom Form Builder, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-04-11.

How severe is CVE-2025-3439?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-3439 known to be exploited?

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

Deserialization in Wpeverest Everest Forms – Contact Form, Payment Quiz, Survey & Custom Form Builder

CVE-2025-3439

The Everest Forms – Contact Form, Quiz, Survey, Newsletter & Payment Form Builder for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.1 via deserialization of untrusted input f…

Vulnerability class: Insecure Deserialization

EPSS: 0.016 (81.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Wpeverest Everest Forms – Contact Form, Payment Quiz, Survey & Custom Form Builder — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-3439?: CVE-2025-3439 is a critical-severity vulnerability in Wpeverest Everest Forms – Contact Form, Payment Quiz, Survey & Custom Form Builder, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-04-11.
How severe is CVE-2025-3439?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-3439 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.