boroeurnprach/cve-2025-11953-pocCVE-2025-11953 - The React Native Metro server's default external binding exposes a vulnerable endpoint, allowing unauthenticated attackers to execute arbitrary OS commands via a malicious POST request.
The Metro Development Server, which is opened by the React Native Community CLI, binds to external interfaces by default. The server exposes an endpoint that is vulnerable to OS command injection. This allows unauthenticated network attackers to send a POST request to the server and run arbitrary executables. On Windows, the attackers can also execute arbitrary shell commands with fully controlled arguments.
| Product | Severity | Affected Versions | Patched Version |
|---|---|---|---|
| @react-native-community/cli | Critical (9.8) | 4.8.0 - 20.0.0‑alpha.2 | 20.0.0 |
npm install
node vuln_server.js
poc.py for linux and windows_PoC.py for windows):python3 windows_PoC.py
![[Pasted image 20260121090252.png]](https://github.com/boroeurnprach/CVE-2025-11953-PoC/blob/main/Asset/Pasted%20image%2020260121090252.png)