CVE-2021-24033
react-dev-utils OS Command Injection in function `getProcessForPort`
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-24033- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-78
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-24033- Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2021-0612 No score
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.
- Record
EUVD-2021-0612- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5q6m-3h65-w53x
react-dev-utils OS Command Injection in function `getProcessForPort`
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.
- Record
GHSA-5q6m-3h65-w53x- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-78
- Updated
- 2026-11-02
OSVGHSA-5q6m-3h65-w53x
react-dev-utils OS Command Injection in function `getProcessForPort`
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.
- Record
GHSA-5q6m-3h65-w53x- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-78
- Updated
- 2026-11-02
OSVCLSA-2026-1793203729 No score
TuxCare security update for react-dev-utils (2 CVEs)
TuxCare rebuilt react-dev-utils to address 2 CVEs. Fixed in 4.2.3-tuxcare.1.
- Record
CLSA-2026-1793203729- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
react-dev-utilsnpm |
0.4.0 up to 11.0.4 | 11.0.4 |
react-dev-utilsTuxCare:npm From an advisory covering 2 CVEs |
4.2.3-tuxcare.0 up to 4.2.3-tuxcare.1, plus listed versions 4.2.3 |
4.2.3-tuxcare.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-24033 is a medium vulnerability (CVSS 5.6) in Facebook React-dev-utils, published March 9, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.29%, the 88th percentile. Fixed in react-dev-utils 11.0.4.
References
github.com/facebook/create-react-app/pull/10644
facebook.com/security/advisories/cve-2021-24033
nvd.nist.gov/vuln/detail/CVE-2021-24033
huntr.dev/bounties/1-npm-react-dev-utils