CVE-2026-14802: React Create-React-App

High severity, CVSS 7.3. EPSS: 2.1% chance of exploitation in the next 30 days.

A vulnerability was detected in react create-react-app up to 5.0.1 on macOS. This affects the function startBrowserProcess of the file openBrowser.js of the component react-dev-utils. Performing a manipulation results in os command injection. Remote exploitation of the attack is possible. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

• React Create-React-App: version 5.0.0 only; version 5.0.1 only

Published 2026-07-06. Last modified 2026-07-06.