9.8

CVE-2025-9083: ninjaforms ninja_forms Deserialization of Untrusted Data

CVSS: 9.8v3.1CriticalAnalyzed
Published 18-09-2025Last modified 22-09-2025
Open JSON

Vulnerability summary

CVE-2025-9083 is a critical (CVSS 9.8) Deserialization of Untrusted Data vulnerability in ninjaforms ninja_forms. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 44.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.54%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 18-09-2025
    PublishedVulnerability first disclosed.
  2. 22-09-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.54%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

0.00 pp

From 0.54% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.54%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Ninjaforms1 product
Unknown1 product
Wordpress1 product
  • ninja-forms≤ 3.11.0 (fixed in 3.11.1)

3 vendors · 3 products

References

2 links