Remote Code Execution Vulnerability in Ninja Forms Plugin by WordPress
CVE-2026-80437

4.8MEDIUM

Key Information:

Vendor

WordPress
Status
Ninja Forms
Vendor
CVE Published:
6 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-80437?

The Ninja Forms plugin for WordPress, specifically versions prior to 3.15.2, contains a vulnerability where it fails to prevent shortcodes in request-derived values from executing. This flaw allows unauthenticated users to run any shortcode available on the site, potentially leading to unauthorized actions or content manipulation. Proper validation and sanitization measures are crucial to prevent such execution, emphasizing the need for users to upgrade to the latest version to safeguard their sites.

Affected Version(s)

Ninja Forms 3.14.10 < 3.15.2

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-2026-80437 - Proof of Concept

References

https://wpscan.com/vulnerability/473a3321-7dc6-454a-82f4-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakub Herman
WPScan
.