CVE-2021-24033

Name: CVE-2021-24033
Creator: NVD / NIST
Published: 2021-03-09T01:15:13.433+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.6/10EPSS 3.29%

Last modified Jun 17, 2026

CVE-2021-24033 is a medium-severity vulnerability rated 5.6/10 on the CVSS scale. react-dev-utils prior to v11.0.4 exposes a function, getProcessForPort, where an input argument is concatenated into a command string to be executed. This function is typically used from react-scripts (in Create React App projects), where the usage is safe. EPSS estimates a 3.29% chance of exploitation in the next 30 days.

Description

react-dev-utils prior to v11.0.4 exposes a function, getProcessForPort, where an input argument is concatenated into a command string to be executed. This function is typically used from react-scripts (in Create React App projects), where the usage is safe. Only when this function is manually invoked with user-provided values (ie: by custom code) is there the potential for command injection. If you're consuming it from react-scripts then this issue does not affect you.

Metrics

CVSS 3.1

5.6/10

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

EPSS Probability

3.29%

86.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Facebook	React-Dev-Utils	< 11.0.4

References

https://github.com/facebook/create-react-app/pull/10644Exploit, Patch, Third Party Advisory
https://www.facebook.com/security/advisories/cve-2021-24033Vendor Advisory
https://github.com/facebook/create-react-app/pull/10644Exploit, Patch, Third Party Advisory
https://www.facebook.com/security/advisories/cve-2021-24033Vendor Advisory

Timeline

Published: Mar 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24033?

How severe is CVE-2021-24033?

CVE-2021-24033 has a CVSS score of 5.6/10 (MEDIUM severity). The EPSS model estimates a 3.29% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24033?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-24033?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST