React-Next-Scanner

Safe CLI scanner for CVE-2025-55182 and CVE-2025-66478

This tool provides a lightweight, non-exploitative vulnerability scanner focused on modern JavaScript stacks, specifically:

• API services affected by CVE-2025-55182
• Next.js applications affected by CVE-2025-66478

It works on: ✅ Windows
✅ Linux
✅ macOS

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✨ Features

• Cross-platform Python CLI scanner
• Heuristic and safe probing (no exploitation)
• Detects public fingerprint leaks
• Optional insecure mode for testing self-signed targets
• Fast scanning with minimal dependencies

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📦 Files

File	Description
react_nextjs_scanner.py	Main scanner script (Python 3.x, cross-platform)
requirements.txt	Dependencies for installation
README.md	Project documentation

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🛠️ Installation

1. Create a virtual environment:

   python3 -m venv .venv
   source .venv/bin/activate  # On Windows: .venv\Scripts\activate

2. Install dependencies:

   pip install -r requirements.txt

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🚀 Usage Examples

python3 react_nextjs_scanner.py http://127.0.0.1:3000 python3 react_nextjs_scanner.py -f targets.txt --insecure

🐚 Exploitation Shell (Lab)

For educational purposes and lab testing, use react_nextjs_shell.py to demonstrate RCE (Remote Code Execution) if a vulnerable endpoint is detected.

Note: This tool first performs a scan (using the scanner logic) and if a specific lab-only RCE vulnerability is confirmed, it opens an interactive shell.

Usage:

python3 react_nextjs_shell.py http://127.0.0.1:8080
# Or skip the scan phase:
python3 react_nextjs_shell.py http://127.0.0.1:8080 --skip-scan

Interactive Shell Commands

Once the shell is open (Shell>), you can run system commands like:

• id
• whoami
• ls -la
• cat /etc/passwd

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🏗️ Testing with Docker

A docker-compose.yml file is provided to easily set up a local vulnerable lab environment.

1. Start the environment:

   docker-compose up --build -d

   This will start:

   • Frontend: http://localhost:3000
   • API Backend: http://localhost:8080

2. Run the scanner/shell:

   # Target the local backend
   python3 react_nextjs_shell.py http://localhost:8080

3. Stop the environment:

   docker-compose down

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👨‍💻 Author

FurkanKAYAPINAR

• GitHub: github.com/FurkanKAYAPINAR
• LinkedIn: linkedin.com/in/FurkanKAYAPINAR