HOMEVULNERABILITIESCVE-2021-24033
MEDIUM

CVE-2021-24033

CWE-78Published: March 9, 2021· Updated: Jun 17, 2026

5.6
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-24033 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected Vendors & Products

facebook1 product(s)
react-dev-utils
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/facebook/create-react-app/pull/10644
PATCHhttps://github.com/facebook/create-react-app/pull/10644
ADVISORYhttps://www.facebook.com/security/advisories/cve-2021-24033
ADVISORYhttps://www.facebook.com/security/advisories/cve-2021-24033

All References (4)

→
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

Quick Facts

CVE IDCVE-2021-24033
CVSS Score5.6 / 10
SeverityMEDIUM
WeaknessCWE-78
CISA KEVNo
Affected1 vendor(s)
PublishedMar 9, 2021

Related CVEs (CWE-78)

CVE-2025-27364
10.0
CVE-2021-35402
KEV10.0
CVE-2024-52034
10.0
CVE-2024-47407
10.0
CVE-2021-47667
10.0
CVE-2026-46339
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-24033 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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