What is CVE-2025-9083?

CVE-2025-9083 is a critical-severity vulnerability in Ninjaforms Ninja_forms, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-09-18.

How severe is CVE-2025-9083?

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

Is CVE-2025-9083 known to be exploited?

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

Deserialization in Ninjaforms Ninja_forms

CVE-2025-9083

The Ninja Forms WordPress plugin before 3.11.1 unserializes user input via form field, which could allow Unauthenticated users to perform PHP Object Injection when a suitable gadget is present on the blog.

Vulnerability class: Insecure Deserialization

EPSS: 0.005 (39.9th 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

Ninjaforms Ninja_forms
Unknown Ninja Forms — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

contact@wpscan.com (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2025-9083?: CVE-2025-9083 is a critical-severity vulnerability in Ninjaforms Ninja_forms, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-09-18.
How severe is CVE-2025-9083?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-9083 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.