Known exploited vulnerability
CVE-2025-11953
The short answer
CVE-2025-11953 affects React-Native-Community React Native Community Cli and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-02-05: attackers are using it, so patch it first. Fixed versions are published for @react-native-community/cli (20.0.0, 19.1.2, 18.0.1) and @react-native-community/cli-server-api (20.0.0, 19.1.2, 18.0.1).
What it is
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.
Weakness: CWE-78.
Severity
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Feb 5, 2026
Federal due date Feb 26, 2026
EPSS, next 30 days
94%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected packages and fixed versions
| Package | Ecosystem | Fixed in | Advisory |
|---|---|---|---|
| @react-native-community/cli | npm | 20.0.0, 19.1.2, 18.0.1 | GHSA-399j-vxmf-hjvr |
| @react-native-community/cli-server-api | npm | 20.0.0, 19.1.2, 18.0.1 | GHSA-399j-vxmf-hjvr |
Is it in your code? Drop your lockfile into the free vulnerability check, or let vulnerability watch check your repository every day and open the upgrade as a pull request.
Affected products
React Native Community Cli. NVD's record lists the exact affected versions.
References
- github.com/react-native-community/cli/commit/15089907d1f1301b22c72d7f68846a2ef20df547 Patch
- jfrog.com/blog/cve-2025-11953-critical-react-native-community-cli-vulnerability ExploitMitigationThird Party Advisory
- x.com/SzymonRybczak/status/1986199665000566848 Third Party Advisory
- x.com/thymikee/status/1986770875954475375 Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-11953 US Government Resource
- www.vulncheck.com/blog/metro4shell_eitw ExploitThird Party Advisory
Questions
Is CVE-2025-11953 being exploited?
Yes. CISA added CVE-2025-11953 to its Known Exploited Vulnerabilities catalog on 2026-02-05, with a federal remediation due date of 2026-02-26.
How do I fix CVE-2025-11953?
Upgrade to a fixed version: @react-native-community/cli (npm) 20.0.0 or 19.1.2 or 18.0.1; @react-native-community/cli-server-api (npm) 20.0.0 or 19.1.2 or 18.0.1. CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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