Command injection in Apache CloudStack - CVE-2026-61400
Published: August 24, 2026
Vulnerability identifier: #VU144655
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-61400
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary commands on system VMs and virtual routers.
The vulnerability exists due to command injection in the getDiagnosticsData and runDiagnostics functionality when processing diagnostic command input. A remote user can send crafted diagnostic requests to execute arbitrary commands on system VMs and virtual routers.
The commands run as root, or at minimum as the diagnostics-process user, and the affected APIs are restricted to Admin role accounts by default.
Affected software
Apache CloudStack
How to mitigate CVE-2026-61400
Install security update from vendor's website.
Apache CloudStack - addressed in versions 4.20.3.1, 4.22.1.1