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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.

PUBLISHED Reserved 2025-10-20 | Published 2025-11-03 | Updated 2026-02-06 | Assigner JFROG




CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA Known Exploited Vulnerability

Date added 2026-02-05 | Due date 2026-02-26

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

Problem types

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Product status

Default status
unaffected

4.8.0 (semver) before 20.0.0
affected

References

www.vulncheck.com/blog/metro4shell_eitw third-party-advisory

www.cisa.gov/...erabilities-catalog?field_cve=CVE-2025-11953 government-resource

x.com/SzymonRybczak/status/1986199665000566848

x.com/thymikee/status/1986770875954475375

jfrog.com/...itical-react-native-community-cli-vulnerability technical-description

github.com/...ommit/15089907d1f1301b22c72d7f68846a2ef20df547 patch

cve.org (CVE-2025-11953)

nvd.nist.gov (CVE-2025-11953)

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