giangdurian/cve-2026-41242
CVSS 9.4 (Critical) | Code Injection (CWE-94)
protobuf.js (npm: protobufjs) versions ≤ 7.5.4 and ≤ 8.0.0 are vulnerable to arbitrary code execution via type names in the protobuf schema. The @protobufjs/codegen module concatenates type names directly into a JavaScript string and then runs it through the Function() constructor (equivalent to eval()). An attacker who controls the schema can inject code that runs on the server.
Patched: protobufjs 7.5.5 / 8.0.1
CVE-2026-41242/
├── REPORT.md # Báo cáo phân tích đầy đủ
├── cve_2026_41242.py # Script exploit (Python)
├── vuln-app/ # Ứng dụng Node.js vulnerable
│ ├── server.js # Express server
│ ├── poc_local.js # PoC local — chứng minh code injection
│ ├── package.json
│ └── package-lock.json
└── img/ # Screenshots
└── *.png # setup, recon, exploit, debug, patch
cd vuln-app
npm install
npm install @protobufjs/[email protected] # BẮT BUỘC pin version — 2.0.5 đã chứa bản vá
# PoC local
node poc_local.js
# Server vulnerable
node server.js
# Exploit từ Kali
python3 cve_2026_41242.py -t http://<TARGET>:3000 -c "whoami"