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CVE-2025-11953 — Vulnerability in...

CRITICAL
Actively Exploited

@react-native-community/cli has arbitrary OS command injection

Published November 3, 2025Updated February 5, 2026Source: osv

What Should I Do?

Patch Immediately

This vulnerability is confirmed under active exploitation (CISA KEV). Patch within 24-48 hours if possible.

Summary

The Metro Development Server, which is opened by the React Native 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.

Advisory Timeline

  • First published November 3, 2025 (343 days ago).
  • Last revised February 5, 2026 — 94 days after initial publication.
  • Added to CISA's Known Exploited Vulnerabilities catalog 93 days after publication.

Remediation

Upgrade to the fixed version using your package manager.

npm
Update @react-native-community/cli-server-api to 20.0.0 or later
npm install @react-native-community/cli-server-api@20.0.0
npm
Update @react-native-community/cli to 18.0.1 or later
npm install @react-native-community/cli@18.0.1
npm
Update @react-native-community/cli to 19.1.2 or later
npm install @react-native-community/cli@19.1.2
npm
Update @react-native-community/cli-server-api to 18.0.1 or later
npm install @react-native-community/cli-server-api@18.0.1
npm
Update @react-native-community/cli to 20.0.0 or later
npm install @react-native-community/cli@20.0.0
npm
Update @react-native-community/cli-server-api to 19.1.2 or later
npm install @react-native-community/cli-server-api@19.1.2

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (6)

Affects 1 ecosystem: npm (2).

PackageEcosystemAffectedFixed In
@react-native-community/cli-server-api
npm
All versions20.0.0
@react-native-community/cli
npm
All versions18.0.1
@react-native-community/cli
npm
All versions19.1.2
@react-native-community/cli-server-api
npm
All versions18.0.1
@react-native-community/cli
npm
All versions20.0.0
@react-native-community/cli-server-api
npm
All versions19.1.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-78
    OS Command InjectionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2025-11953?
@react-native-community/cli has arbitrary OS command injection This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2025-11953?
CVE-2025-11953 affects @react-native-community/cli-server-api and @react-native-community/cli. This vulnerability is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, meaning it is being actively exploited in the wild. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-11953 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Known Exploited Vulnerability

This vulnerability is in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation in the wild.

Added to KEV catalog: February 5, 2026

Remediation deadline: February 26, 2026

Also Known As

GHSA-399j-vxmf-hjvr

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