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CVE-2026-14802

MediumPublished

react create-react-app react-dev-utils openBrowser.js startBrowserProcess os command injection

Published: Jul 6, 2026
Updated: Jul 6, 2026
Assigning CNA: VulDB
Evidence observed: Aug 10, 2026

Primary CVSS

5.5/ 10Medium

nvd · CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS probability estimate

2.1%

Low · next 30 days

Percentile: 80.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

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.

Sources

CVE-2026-14802Informational
Compact CVE reference: OS command injection in create-react-app before 5.0.2 on macOS via react-dev-utils openBrowser.js, including affected versions and temporary mitigation guidance.

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