React Native Community CLI OS Command Injection Vulnerability
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.
9.8
94.0%
Vector breakdown
- 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
- Published
- Nov 3, 2025
- Modified
- Feb 26, 2026
- Added to KEV
- Feb 5, 2026
- Federal patch due
- Feb 26, 2026
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.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2025-11953, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2025-11953 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
References
How this class of flaw gets exploited
Frequently asked questions
What is CVE-2025-11953?
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.
How severe is CVE-2025-11953?
CVE-2025-11953 has a CVSS base score of 9.8 out of 10 (CVSS 3.1).
Is CVE-2025-11953 actively exploited in the wild?
Yes. CVE-2025-11953 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Feb 5, 2026, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-11953?
94.0% - meaning FIRST.org's EPSS model estimates a 94.0% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2025-11953?
Yes - a public Nuclei template referencing CVE-2025-11953 exist in public repositories we checked.
What type of vulnerability is CVE-2025-11953?
CVE-2025-11953 is classified under CWE-78 (CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')).
Cross-checked against
Impactr finds and proves whether CVE-2025-11953 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.