Disclosure summary
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.
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
GitHub Reviewed Security Advisories · GHSA-g9g6-gvq9-j4vp
Open original source · Updated Oct 01, 2026
react-dev-utils openBrowser permits command injection on macOS
Source severity: MEDIUM / 5.5
| Ecosystem | Package | Affected range | First patched |
|---|---|---|---|
| npm | react-dev-utils | Not supplied |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Reviewed advisory
PUBLISHED 2026-07-06T05:30:27-04:00
MODIFIED 2026-10-01T17:08:57-04:00
INGESTED 2026-10-06T11:45:17-04:00