# react-dev-utils (npm) vulnerabilities

3 known vulnerabilities (1 critical, 1 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 12.0.1 (Apr 12, 2022): no advisory affects it
- Newest unaffected release: 12.0.1 (Apr 12, 2022), the latest release
- Weekly downloads: 5.5M
- Dependents: 40.4K
- Releases: 116 since 0.0.0 (Sep 23, 2016)
- Registry: https://www.npmjs.com/package/react-dev-utils
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-14802: 0.0.0 to 5.0.1 (5.0.2 is outside it)
- CVE-2021-24033: 0.4.0 to 11.0.3 (11.0.4 is outside it)
- CVE-2018-6342: 1.0.0 to 1.0.3 (1.0.4 is outside it); 2.0.0 to 2.0.1 (2.0.2 is outside it); 3.0.0 to 3.1.1 (3.1.2 is outside it); 4.0.0 to 4.2.1 (4.2.2 is outside it); 5.0.0 to 5.0.1 (5.0.2 is outside it)

## Advisories (3)

### [CVE-2026-14802](https://cve.now/CVE-2026-14802): react create-react-app react-dev-utils openBrowser.js startBrowserProcess os command injection

- Severity: Medium 6.9
- Published: Jul 6, 2026
- Affected: through 5.0.1.
- Fixed in 5.0.2 (released Aug 22, 2018, 2875 days before disclosure), the first release outside every affected range (no listed fixed version clears them all).
- The latest release, 12.0.1, is not affected.
- 1.8% of react-dev-utils downloads last week were affected versions (114.4K).

### [CVE-2021-24033](https://cve.now/CVE-2021-24033): react-dev-utils prior to v11.0.4 exposes a function, getProcessForPort, where an input argument is concatenated into a command string to…

- Severity: Unrated
- Published: Mar 9, 2021
- Affected: from 0.4.0, fixed in 11.0.4.
- Fixed in 11.0.4 (released Mar 8, 2021, 1 day before disclosure).
- The latest release, 12.0.1, is not affected.
- 13% of react-dev-utils downloads last week were affected versions (803.9K).

### [CVE-2018-6342](https://cve.now/CVE-2018-6342): react-dev-utils on Windows allows developers to run a local webserver for accepting various commands, including a command to launch an…

- Severity: Critical 9.8
- Published: Dec 31, 2018
- Affected: from 1.0.0, fixed in 1.0.4; from 2.0.0, fixed in 2.0.2; from 3.0.0, fixed in 3.1.2; from 4.0.0, fixed in 4.2.2; from 5.0.0, fixed in 5.0.2.
- Fixed in 1.0.4 (released Aug 24, 2018, 129 days before disclosure), 2.0.2 (released Aug 24, 2018, 129 days before disclosure), 3.1.2 (released Aug 24, 2018, 129 days before disclosure) and 2 other versions.
- The latest release, 12.0.1, is not affected.
- 0.6% of react-dev-utils downloads last week were affected versions (37.7K).

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