CVE-2026-61400

Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in Apache CloudStack's run and get diagnostics functionality for the system VMs and virtual routers. An authenticated user holding the permissions required to invoke either `getDiagnosticsData` or `runDiagnostics` can achieve arbitrary command execution on the system VM and/or Virtual Router instances, with commands running as root (or as the diagnostics-process user, at minimum). This represents a full compromise of the affected instance and, depending on network segmentation, may provide a foothold for lateral movement within the CloudStack-managed infrastructure, including access to guest network traffic handled by the compromised Virtual Router. The getDiagnosticsData and runDiagnostics APIs are restricted to only Admin role accounts by default. This issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc	Mailing List Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:cloudstack::::::::
	cpe:2.3:a:apache:cloudstack::::::::

History

No history.

Information

Published : 2026-08-21 09:16

Updated : 2026-08-27 14:39

NVD link : CVE-2026-61400

Mitre link : CVE-2026-61400

CVE.ORG link : CVE-2026-61400

JSON object : View

Products Affected

apache

cloudstack

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

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