RCE in React Create-React-App
CVE-2026-14802
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.021 (81.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- React Create-React-App — versions 5.0.0, 5.0.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vuldb.com/vuln/376396 (technical-description, vdb-entry)
- vuldb.com/vuln/376396/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-14802 (third-party-advisory)
- vuldb.com/submit/850857 (third-party-advisory)
- github.com/react/create-react-app/issues/17269 (issue-tracking, exploit)
- github.com/react/create-react-app/ (product)
Frequently asked questions
- What is CVE-2026-14802?
- CVE-2026-14802 is a high-severity vulnerability in React Create-React-App, classified under Command Injection. CVSS score: 7.3/10. Published 2026-07-06.
- How severe is CVE-2026-14802?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2026-14802 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.