Command Injection Affecting @react-native-community/cli-server-api package, versions >=17.0.0 <17.0.1>=18.0.0 <18.0.1>=19.0.0-alpha.0 <19.1.2>=20.0.0-alpha.0 <20.0.0
Threat Intelligence
Snyk has reported that there have been attempts or successful attacks targeting this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-REACTNATIVECOMMUNITYCLISERVERAPI-13836141
- published6 Nov 2025
- disclosed3 Nov 2025
- creditOr Peles
Introduced: 3 Nov 2025
CVE-2025-11953 (opens in a new tab)How to fix?
Upgrade @react-native-community/cli-server-api to version 17.0.1, 18.0.1, 19.1.2, 20.0.0 or higher.
Overview
Affected versions of this package are vulnerable to Command Injection via the url variable processing in openURLMiddleware.ts. An attacker can execute arbitrary system commands by sending crafted HTTP POST requests, if the Metro development server is in use. This server binds to all interfaces, exposing the application to remote connections.
Note: Only applications developed without a Framework are vulnerable, and code execution has only been demonstrated on Windows.
The vulnerable open(url) was introduced in version 17.0.0 with commit 2143752.