CVE-2025-11953
Critical 9.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- React Native Community CLI OS Command Injection Vulnerability
- Added to catalog
- Remediation due date (US federal)
- 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.
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.
Metrics
- CVSS 3.1
-
9.8 (CRITICAL)
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 94% (percentile: 100) as of 1 November 2026
- CWE
- CWE-78
Affected products
react-native-community: react native community cli
References
- https://github.com/react-native-community/cli/commit/15089907d1f1301b22c72d7f68… Patch
- https://jfrog.com/blog/cve-2025-11953-critical-react-native-community-cli-vulne… ExploitMitigationThird Party Advisory
- https://www.vulncheck.com/blog/metro4shell_eitw ExploitThird Party Advisory
- https://x.com/SzymonRybczak/status/1986199665000566848 Third Party Advisory
- https://x.com/thymikee/status/1986770875954475375 Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025… US Government Resource