GHSA-74j8-88mm-7496

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    GHSA-74j8-88mm-7496

    Published: 21 Sept 2021Last Modified: 10 Sept 2026
    Aliases:
    CVE-2020-8561

    Summary: Confused Deputy in Kubernetes

    Details: A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs.

    References: https://nvd.nist.gov/vuln/detail/CVE-2020-8561, https://github.com/kubernetes/kubernetes/issues/104720, https://github.com/kubernetes/kubernetes, https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY, https://kubernetes.io/blog/2026/05/26/reconciling-unfixed-kubernetes-cves, https://security.netapp.com/advisory/ntap-20211014-0002

    Affected packages

    Package

    Name: k8s.io/kubernetes

    Purl: pkg:golang/k8s.io/kubernetes

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    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
    GHSA-74j8-88mm-7496 | CVE-DB