CVE-2021-24033: Facebook React-Dev-Utils

Medium severity, CVSS 5.6. EPSS: 3.3% chance of exploitation in the next 30 days.

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.

Affected products

• Facebook React-Dev-Utils: before 11.0.4 (fixed in 11.0.4)

Published 2021-03-09. Last modified 2026-06-17.