OS Command Injection in React Create-React-App on macOS
CVE-2026-14802

6.9MEDIUM

Key Information:

Vendor

React

Status
Create-react-app
Vendor
CVE Published:
6 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-14802?

A security vulnerability has been identified in the React Create-React-App framework on macOS, specifically within the startBrowserProcess function located in openBrowser.js of the react-dev-utils component. This flaw permits OS command injection, allowing attackers to potentially execute arbitrary commands on the host system. The issue has been made public, and its exploit is now available, raising concerns for users of affected versions. The React team was previously informed about this issue through an issue report but has yet to respond.

Affected Version(s)

create-react-app 5.0.0

create-react-app 5.0.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-14802 - Proof of Concept

References

https://vuldb.com/vuln/376396
vdb-entrytechnical-description
https://vuldb.com/vuln/376396/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-14802
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dremig (VulDB User)
VulDB CNA Team
.