Which products and versions are affected by CVE-2021-38294?

Affected: Storm (Apache) versions >= v1.0.0; org.apache.storm:storm (maven) versions >= 2.2.0. The full list is in the CVE brief.

Is CVE-2021-38294 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2021-38294 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-38294?

Public exploit code is available.

Is there a fix for CVE-2021-38294?

Fixed versions are available, including Storm 1.2.4, Storm Apache Storm*, Storm v1.2.4.

How urgently should CVE-2021-38294 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2021-38294

CriticalPublic exploit

Command injection leading to Remote Code Execution in Apache Storm

Published Oct 26, 2021 · Updated Jul 8, 2026 · Also known as GHSA-6768-mcjc-8223, TR-21-0868

Key Facts

Patch immediately

CVE-2021-38294 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Storm (Apache), org.apache.storm:storm (maven).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 84% probability of exploitation in the next 30 days.
Fixed versions are available, including Storm 1.2.4, Storm Apache Storm*, Storm v1.2.4.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

9.8

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

EPSS (30-day exploit likelihood)

84%

Higher than 99.6% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2021-38294 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

A Command Injection vulnerability exists in the getTopologyHistory service of the Apache Storm 2.x prior to 2.2.1 and Apache Storm 1.x prior to 1.2.4. A specially crafted thrift request to the Nimbus server allows Remote Code Execution (RCE) prior to authentication.

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
StormApache	>= v1.0.0	1.2.4
org.apache.storm:stormmaven	>= 2.2.0	1.2.4

Patched Releases

Storm

1.2.4, Apache Storm*, v1.2.4

org.apache.storm:storm

1.2.4, 2.1.1, 2.2.1

Timeline

Publicly disclosed
Oct 26, 2021
Last updated
Jul 8, 2026

Weakness Type

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

5 more references in the full CVE brief

FAQ

Common Questions.

A Command Injection vulnerability exists in the getTopologyHistory service of the Apache Storm 2.x prior to 2.2.1 and Apache Storm 1.x prior to 1.2.4.
Affected: Storm (Apache) versions >= v1.0.0; org.apache.storm:storm (maven) versions >= 2.2.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Storm 1.2.4, Storm Apache Storm*, Storm v1.2.4.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2021-38294 Running On Your Attack Surface?

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