CVE-2026-61400
HighCVSS 8.8Exploitation Probability (EPSS)
Elevated risk67th percentile - higher than 67% of all known CVEs
Summary
Command Injection vulnerability in Apache CloudStack's run and get diagnostics functionality for system VMs and virtual routers. An authenticated user with required permissions can achieve arbitrary command execution on system VM and/or Virtual Router instances, running as root. Affects versions from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
Risk Assessment
Full compromise of affected instances, potential lateral movement within CloudStack-managed infrastructure, and access to guest network traffic via compromised Virtual Router.
Recommendation
Upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.
Other vulnerabilities in Apache CloudStack
See all- CVE-2026-25077High
Account users are allowed by default to register templates to be downloaded directly to the primary storage for deploying instances using the KVM hypervisor. Due to missing file name sanitization, an attacker can register malicious templates to execute arbitrary code on the KVM hosts.
- CVE-2025-66467High
Missing MinIO policy cleanup on bucket deletion via Apache CloudStack allows users to retain access to buckets which they previously owned. If another user creates a new bucket with the same name, the previous owners can gain unauthorized read and write access to it.
- CVE-2026-62440Critical
Improper Access Control vulnerability in Apache CloudStack's Kubernetes Service (CKS) plugin, allowing cross-tenant manipulation of the Kubernetes cluster while adding and removing nodes. Affects versions from 4.21.0.0 through 4.22.1.0.
- CVE-2026-61398Critical
Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Instance Reset Password functionality. Affects versions from 4.15.1.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
- CVE-2026-59085Critical
Server-Side Request Forgery (SSRF) vulnerability in Apache CloudStack's webhook module, exploitable via webhook delivery requests. Affects versions from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
- CVE-2026-25199Critical
The Proxmox extension for Apache CloudStack allows unauthorized access to instances belonging to other tenants. The issue arises from improper use of an instance setting, enabling attackers to modify and gain control over virtual machines of other users.
- CVE-2015-3252Critical
Apache CloudStack before version 4.5.2 does not properly preserve VNC passwords when migrating KVM virtual machines, allowing remote attackers to gain access by connecting to the VNC server.
- CVE-2026-59654High
Apache CloudStack versions 4.7.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0 have a missing release of resource after effective lifetime vulnerability in the scoped global configuration functionality. This may lead to denial of service (DoS) for the management server.
- CVE-2026-68745High
Certificate validation failures in SAML authentication in Apache CloudStack 4.20.3.0 and 4.22.1.0 allow a malicious agent to forge a SAML response to the management server. The agent must spoof the IdP IP address or register a URL of its own choosing, after which it can allow logging on with forged signatures. Users are recommended to upgrade to versions 4.20.3.1 or 4.22.1.1 and above.
- CVE-2026-66797Medium
Improper access control in CloudStack's annotation functionality allows unauthorized comment creation and disclosure. The addAnnotation and listAnnotation APIs perform an ownership check but fail to honor its result correctly, allowing any authenticated user to write and read annotations on entities they don't own. Affects versions from 4.15.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
Original NVD description (English source)
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.