SEPTEMBER 19, 2026
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Case File

CVE-2026-61400

HIGH · CVSS 8.8 EPSS 1.54%

Source: NVD + CISA KEV + EPSS · Published 2026-08-21 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

Apache CloudStack versions 4.20.0.0 to 4.20.3.0 and 4.21.0.0 to 4.22.1.0 are vulnerable to a command injection flaw that allows authenticated users with the appropriate permissions to execute arbitrary commands on system VMs and virtual routers, potentially leading to a full compromise of the affected instances. This vulnerability poses a significant risk, as it may enable lateral movement within the CloudStack-managed infrastructure and unauthorized access to guest network traffic. Administrators of affected systems should prioritize upgrading to versions 4.20.3.1 or 4.22.1.1 or later to mitigate this risk.

CVE
CVE-2026-61400
Severity
HIGH
CVSS
8.8
EPSS
1.54%
Apache

Original NVD Description

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.

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