CVE-2025-66478-Research-Proof-of-Concept

Overview

This repository contains research and a proof-of-concept implementation related to CVE-2025-66478, a vulnerability affecting certain Next.js / React Server Components configurations.

The project was developed in a controlled laboratory environment for educational and defensive security purposes.

Disclaimer

This repository is provided exclusively for:

• Security research
• Defensive testing
• Educational purposes
• Authorized laboratory environments

Do not use this code against systems without explicit authorization.

The author assumes no responsibility for misuse.

Technical Summary

The vulnerability allows an attacker to trigger unintended code execution through unsafe handling of React Server Components payloads.

Affected applications may expose execution primitives capable of reaching Node.js internals under specific circumstances.

Features

• Automated payload generation
• HTTP request construction
• Response parsing
• Research-oriented implementation
• Simple command execution workflow for laboratory environments

Requirements

• Python 3.10+
• requests

Install dependencies:

pip install -r requirements.txt

Usage

python exploit.py

The script will request:

• Target URL
• Command to execute

Research Notes

The repository was developed while studying:

• React Server Components
• Next.js internals
• Node.js execution context
• Debugging interfaces
• Application security

References

• React Documentation
• Next.js Documentation
• Node.js Documentation
• Public vulnerability advisories

License

MIT License