CVE-2025-11953

CriticalActively exploited (CISA KEV)

Description

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.

SeverityCritical
CVSS9.8
Exploit probability—
ProductReact Native Community CLI
PublishedNov 3, 2025
First seenNov 3, 2025
Added to KEVFeb 5, 2026

How to fix

CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA due date: Feb 26, 2026
Update
  • react-native-community react_native_community_cli19.1.2 or later
  • @react-native-community/cli20.0.0, 19.1.2, 18.0.1 or later
  • @react-native-community/cli-server-api20.0.0, 19.1.2, 18.0.1 or later

Affected products

ProductAffected versionsFixed in
react-native-community react_native_community_cli19.0.0 ≤ v < 19.1.2, 18.0.0, 20.0.019.1.2
@react-native-community/clinpm20.0.0-alpha.0 ≤ v < 20.0.0, 19.0.0-alpha.0 ≤ v < 19.1.2, 18.0.0 ≤ v < 18.0.120.0.0, 19.1.2, 18.0.1
@react-native-community/cli-server-apinpm20.0.0-alpha.0 ≤ v < 20.0.0, 19.0.0-alpha.0 ≤ v < 19.1.2, 18.0.0 ≤ v < 18.0.120.0.0, 19.1.2, 18.0.1

Check your version

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