CVEs / CVE-2025-11953
CVE-2025-11953: React Native Community CLI OS Command Injection Vulnerability
- Known exploited in the CISA KEV catalog since 5 Feb 2026
- critical 9.8 CVSS 3.1 (from the CNA)
- EPSS 93.9% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
React Native Community CLI contains an OS command injection vulnerability which could allow unauthenticated network attackers to send POST requests to the Metro Development Server and run arbitrary executables via a vulnerable endpoint exposed by the server. On Windows, attackers can also execute arbitrary shell commands with fully controlled arguments.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| from 4.8.0, before 20.0.0 | 20.0.0 |
| Product | Affected | Fixed in |
|---|---|---|
| @react-native-community/cli (npm) | from 20.0.0-alpha.0, before 20.0.0 | 20.0.0 |
| @react-native-community/cli (npm) | from 19.0.0-alpha.0, before 19.1.2 | 19.1.2 |
| @react-native-community/cli (npm) | from 18.0.0, before 18.0.1 | 18.0.1 |
| @react-native-community/cli-server-api (npm) | from 20.0.0-alpha.0, before 20.0.0 | 20.0.0 |
| @react-native-community/cli-server-api (npm) | from 19.0.0-alpha.0, before 19.1.2 | 19.1.2 |
| @react-native-community/cli-server-api (npm) | from 18.0.0, before 18.0.1 | 18.0.1 |
Package versions from GHSA-399j-vxmf-hjvr.
Exploitation
| In CISA KEV since | 5 Feb 2026 |
|---|---|
| Due date for US federal agencies | 26 Feb 2026 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-78 |
References
- CVE-2025-11953 on NVD
- CVE-2025-11953 in the CISA KEV catalog
- https://github.com/react-native-community/cli/commit/15089907d1f1301b22c72d7f68846a2ef20df547 (cited by CISA)
- https://github.com/react-native-community/cli/pull/2735 (cited by CISA)
- CVE-2025-11953 on OSV
- https://github.com/react-native-community/cli/commit/15089907d1f1301b22c72d7f68846a2ef20df547 Patch
- https://jfrog.com/blog/cve-2025-11953-critical-react-native-community-cli-vulnerability Exploit, Mitigation, Third 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-2025-11953 US Government Resource
- https://www.vulncheck.com/blog/metro4shell_eitw Exploit, Third Party Advisory
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.