CVE-2026-14802

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.

CVSS v3.1 Score

7.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS — Exploit Prediction

0.0132

Probability of exploitation

0.67%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-77 CWE-77

CWE-78 OS Command Injection

References

Other References

https://github.com/react/create-react-app/ https://github.com/react/create-react-app/issues/17269 https://vuldb.com/cve/CVE-2026-14802 https://vuldb.com/submit/850857 https://vuldb.com/vuln/376396 https://vuldb.com/vuln/376396/cti https://vuldb.com/submit/850857

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-14802? +

CVE-2026-14802 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0132, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-14802? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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