CVE-2026-92820 — The Ninja Forms - File Uploads plugin for WordPress is vulnerable to arbitrary file…¶

Key facts

CVE-2026-92820 is a High (8.1) vulnerability: The Ninja Forms - File Uploads plugin for WordPress is vulnerable to arbitrary file…. This entry ships a detection-only PoC and a Docker test lab.


CVE	CVE-2026-92820
Severity	High (8.1)
Detection / prevention	—
PoC	poc.py
Source	2026/CVE-2026-92820/

Details¶

English | 한국어

Description¶

The Ninja Forms - File Uploads plugin for WordPress is vulnerable to arbitrary file operations in all versions up to, and including, 3.3.34 via the external (Amazon S3) upload flow. The plugin trusts an attacker-supplied file path from the form submission and stores it as the upload's file_path, which is then used without validation to attach a file to the form's notification email (arbitrary file read), to write fetched content (arbitrary file write, leading to remote code execution when the external store is configured), and in a scheduled deletion (arbitrary file deletion). This makes it possible for unauthenticated attackers to read, write, or delete arbitrary files on the server. Exploitation requires the site to use the plugin's External File Upload (Amazon S3) action; the read variant additionally requires a form Email action configured to attach the uploaded file.

Vulnerability Details¶

Property	Value
CVE ID	CVE-2026-92820
Type	RCE
CVSS Score	8.1

Proof of Concept¶

Download¶

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-92820/poc.py

Usage¶

# Run PoC against target
python3 poc.py --target <TARGET_URL>

# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>

⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.

Test Lab¶

This repository includes a Docker-based test environment with both vulnerable and patched applications.

Quick Start¶

# Clone and navigate to CVE directory
cd CVE-2026-92820

# Start both applications
docker-compose up -d

# Run tests
./run-tests.sh    # Linux/Mac
./run-tests.ps1   # Windows PowerShell

Application Endpoints¶

Application	URL	Status
Vulnerable App	http://localhost:8080	Shows vulnerability
Patched App	http://localhost:8081	Demonstrates fix

Directory Structure¶

├── README.md           # English documentation
├── README_KO.md        # Korean documentation
├── poc.py              # PoC detection script
├── docker-compose.yml  # Container orchestration
├── run-tests.sh        # Linux/Mac test runner
├── run-tests.ps1       # Windows test runner
├── vulnerable-app/     # Vulnerable version
│   ├── app.py
│   ├── Dockerfile
│   └── requirements.txt
└── patched-app/        # Fixed version
    ├── app.py
    ├── Dockerfile
    └── requirements.txt

References¶

https://ninjaforms.com/extensions/file-uploads/
https://www.wordfence.com/threat-intel/vulnerabilities/id/6d5f0ec1-abcb-4aa2-a130-53682fa13f00?source=cve

Generated by PoC Generator on 2026-10-03T16:29:33.888771064

Frequently asked questions¶

What is CVE-2026-92820?¶

CVE-2026-92820 is a High (8.1) vulnerability: The Ninja Forms - File Uploads plugin for WordPress is vulnerable to arbitrary file…. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-92820?¶

Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.

How do I block or mitigate CVE-2026-92820?¶

Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.

For authorized security testing and research only. See the full source and NVD record.