CISA KEV · Known exploitedCritical

CVE-2025-11953

React Native Community CLI

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.

CVSS: 9.8
EPSS: 61.9%
CISA KEV: Listed
Published: 2025.11.04

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability61.9%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: React Native Community CLI
Affected versions: 4.8.0, >= 19.0.0 < 19.1.2, 18.0.0, 20.0.0
Fixed versions: 19.1.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

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.

Due date: 2026.02.26

1
Identify
Confirm that React Native Community CLI and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-78
KEV added: 2026.02.05
Ransomware use: 미확인