CVE-2026-61400
Apache CloudStack: Get and Run Diagnostics Command Injection
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.
INFO
Published Date :
Aug. 21, 2026, 9:16 a.m.
Last Modified :
Oct. 16, 2026, 3:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Upgrade Apache CloudStack to version 4.20.3.1 or later.
- Upgrade Apache CloudStack to version 4.22.1.1 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-61400.
| URL | Resource |
|---|---|
| https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc | Mailing List Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-61400 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-61400
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-61400 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-61400 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 16, 2026
Action Type Old Value New Value Added Translation Title: Apache CloudStack de Apache Software Foundation, Description: Neutralización Inadecuada de Elementos Especiales utilizados en un Comando ('Inyección de Comandos') vulnerabilidad en la funcionalidad de ejecución y obtención de diagnósticos de Apache CloudStack para las máquinas virtuales del sistema (VMs) y los routers virtuales. Un usuario autenticado que posea los permisos necesarios para invocar 'getDiagnosticsData' o 'runDiagnostics' puede lograr la ejecución arbitraria de comandos en las instancias de la máquina virtual del sistema (VM) y/o del Router Virtual, con comandos ejecutándose como root (o como el usuario del proceso de diagnóstico, como mínimo). Esto representa un compromiso total de la instancia afectada y, dependiendo de la segmentación de la red, puede proporcionar un punto de apoyo para el movimiento lateral dentro de la infraestructura gestionada por CloudStack, incluyendo el acceso al tráfico de red de invitados manejado por el Router Virtual comprometido. Las APIs 'getDiagnosticsData' y 'runDiagnostics' están restringidas solo a cuentas con rol de Administrador por defecto. Este problema afecta a Apache CloudStack: desde 4.20.0.0 hasta 4.20.3.0 y desde 4.21.0.0 hasta 4.22.1.0. Se recomienda a los usuarios actualizar a la versión 4.20.3.1 o 4.22.1.1 o posterior, que corrige el problema. -
Initial Analysis by [email protected]
Aug. 27, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:* versions from (including) 4.21.0.0 up to (excluding) 4.22.1.1 *cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:* versions from (including) 4.20.0.0 up to (excluding) 4.20.3.1 Added Reference Type Apache Software Foundation: https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc Types: Mailing List, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 22, 2026
Action Type Old Value New Value Changed SSVC {'id': 'CVE-2026-61400', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-21T17:28:13.911759Z'} {'id': 'CVE-2026-61400', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-21T00:00:00+00:00'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 21, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added SSVC {'id': 'CVE-2026-61400', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-21T17:28:13.911759Z'} -
New CVE Received by [email protected]
Aug. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache CloudStack', 'versions': [{'status': 'affected', 'version': '4.14.0.0', 'versionType': 'semver', 'lessThanOrEqual': '4.20.3.0'}, {'status': 'affected', 'version': '4.21.0.0', 'versionType': 'semver', 'lessThanOrEqual': '4.22.1.0'}], 'defaultStatus': 'unaffected'}] Added 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. Added CWE CWE-77 Added Reference https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc