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Remote Code Execution Vulnerability in React Native Metro Server 

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: CRITICAL

Software Affected

@react-native-community/cli(npm) versions prior to 18.0.1, 19.1.2 and 20.0.0

@react-native-community/cli-server(npm) versions prior to 18.0.1, 19.1.2 and 20.0.0

Overview

A vulnerability has been reported in React Native Metro Server, which may allow an unauthenticated attacker to execute arbitrary executable and shell commands on the targeted system.

Target Audience:

All end-user organizations and individuals using the affected React Native development on Windows installations.

Risk Assessment:

High risk of full system compromise, privilege escalation, and persistence.

Impact Assessment:

Potential for arbitrary execution of executable or OS commands, sensitive information disclosure, and deployment of malware.

Description

The vulnerability exists in the React Native Community CLI due to insecure default binding to external network interfaces and insufficient input validation in Metro Development Server. An attacker could exploit this vulnerability by sending specially crafted POST request to the exposed server endpoint over the network.

Successful exploitation could allow an unauthenticated attacker to execute arbitrary executable and shell commands on the targeted system.

Solution

 

https://github.com/advisories/GHSA-399j-vxmf-hjvr

Vendor Information

React Native

https://github.com/react-native-community/cli/

References

 

https://github.com/advisories/GHSA-399j-vxmf-hjvr

CVE Name

CVE-2025-11953

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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