React2Shell Tribune — VULNERABLE WEB APPLICATION LAB

A modern Next.js web app themed as a news / blog portal for CVE-2025-55182 (React) and CVE-2025-66478 (Next.js) to learn, detect, and safely exercise React2Shell. Runs unpatched React 19.0.0 and Next.js 15.0.3.

Overview

• Fictional news portal built with Next.js App Router and Server Actions.
• Default configuration, no custom dangerous code, intentionally left unpatched.
• Designed to study insecure deserialization in the RSC “Flight” protocol and to practice detection/mitigation.

Quick start (Docker recommended)

# 1. Start the lab
docker-compose up -d

# 2. Open the app
http://localhost:3000

# 3. Stop when done
docker-compose down

Manual setup and dev mode

Production-like manual run:

npm install --legacy-peer-deps
npm run build
npm start
# Visit http://localhost:3000

Development with hot reload:

npm install --legacy-peer-deps
npm run dev

Notes:

• Always use --legacy-peer-deps because of intentional version pinning.
• If port 3000 is busy, change the mapping in docker-compose.yml (e.g., 3001:3000) or export PORT before starting.

Quick operational status

• Container: hi-react2shell-tribune
• Port: 3000 (expects HTTP 200 OK)
• Vulnerable versions: React 19.0.0, Next.js 15.0.3

Helpful commands:

docker-compose ps
docker-compose logs -f hi-react2shell-tribune
docker-compose restart
docker-compose build --no-cache && docker-compose up -d

Vulnerability summary (React2Shell)

• CVE-2025-55182 (React) and CVE-2025-66478 (Next.js) allow unauthenticated RCE via insecure deserialization in RSC.

Relevant affected versions:

• React: 19.0.0, 19.1.0, 19.1.1, 19.2.0
• Next.js: >=14.3.0-canary.77, all 15.x, 16.x unpatched

Exploitation reality

• No publicly known RCE exploit for a default app; react2shell.com says “Watch this space.”
• PoCs that manually expose child_process, vm, or fs are not representative.

References

• Vercel/Next.js Advisory: https://github.com/vercel/next.js/security/advisories/GHSA-9qr9-h5gf-34mp
• React2Shell info hub: https://react2shell.com/
• Wiz analysis: https://www.wiz.io/blog/critical-vulnerability-in-react-cve-2025-55182

License

This project is licensed under the Apache License 2.0. See LICENSE for details.

---

Credits

• Main contributor: @sakibulalikhan
• Build with ❤️ by HiddenInvestigations.Net

📬 Contact us: [email protected]