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    CVE-2026-62440

    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. This issue affects Apache CloudStack: from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.22.1.1 or later, which fixes the issue.

    Published:Aug 21, 2026
    Last Modified:Aug 27, 2026
    EPS:Aug 21, 2026
    EPSS Score:0.00232
    CVSS Score:9.1

    Affected Products

    Vendor
    Apache
    Product
    Apache Cloudstack
    Vendor
    Apache
    Product
    Cloudstack

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-284 Improper Access Control

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    CVE-2025-26521 (CVSS 8.1) — When an Apache CloudStack user-account creates a CKS-based Kubernetes cluster in a project, the API key and th…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High