CVE-2026-14802
react create-react-app react-dev-utils openBrowser.js startBrowserProcess os command injection
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
Exploit maturity
Proof of concept
Public proof of concept exists, but not yet automated.
CVSS 6.9EPSS 1.3%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
06 Jul 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
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
Affected products
react · create-react-apppublic PoCs found — 1
cve_referencegithub.com/react/create-react-app/issues/17269unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.