Stored Cross-Site Scripting Vulnerability in Ninja Forms Plugin by WordPress
CVE-2025-2561

4.8MEDIUM

Key Information:

Vendor

WordPress
Status
Ninja Forms
Vendor
CVE Published:
19 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-2561?

The Ninja Forms plugin for WordPress is susceptible to a Stored Cross-Site Scripting (XSS) vulnerability in versions prior to 3.10.1. This flaw arises due to insufficient sanitization and escaping of certain settings, potentially allowing high privilege users, such as administrators, to execute XSS attacks. This is particularly concerning when the unfiltered_html capability is restricted, such as in a multisite environment, which could lead to unauthorized script execution in user browsers.

Affected Version(s)

Ninja Forms 0 < 3.10.1

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-2025-2561 - Proof of Concept

References

https://wpscan.com/vulnerability/4a2074a3-a479-4473-92fb-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bob Matyas
WPScan
.
CVE-2025-2561 : Stored Cross-Site Scripting Vulnerability in Ninja Forms Plugin by WordPress