PHP Object Injection Vulnerability in Ninja Forms Plugin by Ninja Squad
CVE-2025-9083

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Ninja Forms
Vendor
CVE Published:
18 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9083?

The Ninja Forms plugin for WordPress, before version 3.11.1, contains a vulnerability that allows unauthenticated users to exploit PHP Object Injection through unserialization of user input in form fields. If the blog contains a suitable gadget, this flaw could be leveraged, potentially resulting in serious security breaches.

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Deploy the Patch

Affected Version(s)

Ninja Forms 0 < 3.11.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-9083 - Proof of Concept

References

https://wpscan.com/vulnerability/60b4d7fc-5d23-4dcf-bd7f-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

wcraft
WPScan
JSON
.