CVE-2026-14802 react create-react-app react-dev-utils openBrowser.js startBrowserProcess os command injection
An OS command injection vulnerability in react-dev-utils allows remote attackers to execute arbitrary commands on macOS systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-14802?
CVE-2026-14802 is a medium-severity command injection vulnerability in create-react-app, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-14802?
2 open source packages ship an affected version, including react-dev-utils.
| Package | Affected | Fixed in |
|---|---|---|
react-dev-utils npm | All versions to 5.0.1 | None |
react-dev-utils npm | All versions to 5.0.1 | None |
How do I fix CVE-2026-14802?
No fix published yet.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-14802 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14802 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-g9g6-gvq9-j4vp.