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OpenAdvisories
High · 7.7 CVE-2026-17527 EUVD-2026-49135GHSA-2cmm-29f6-xcpx

Virt-cdi-operator: containerized-data-importer: cdi.kubevirt.io:view aggregated clusterrole grants create on datavolumes/source, allowing unauthorized pvc clone

Published Jul 27, 2026 · Updated Nov 3, 2026 · Assigned by redhat

Vendor: Red Hat Product: Red Hat Container Native Virtualization 4.14 Product: Red Hat Container Native Virtualization 4.16 Product: Red Hat Container Native Virtualization 4.17 Product: Red Hat Container Native Virtualization 4.18 Product: Red Hat Container Native Virtualization 4.19 Product: Red Hat Container Native Virtualization 4.20 Product: Red Hat Container Native Virtualization 4.21 Product: Red Hat Container Native Virtualization 4.22 Product: Red Hat OpenShift Virtualization 4 Package: containerized-data-importer Package: kubevirt Package: kubevirt-openvmm Ecosystem: Azure Linux

Description

In containerized-data-importer (CDI), the aggregated cdi.kubevirt.io:view ClusterRole, intended to provide read-only access to CDI resources, includes a rule granting create on the datavolumes/source subresource. CDI's DataVolume clone authorization accepts this permission as sufficient to authorize cloning the contents of any PVC the caller can name, without requiring write access to the source namespace. A user or service account bound to the view role, commonly granted cluster-wide via ClusterRoleBinding, who also has ordinary write access (edit/admin) to any single namespace, can use this to exfiltrate the contents of any PVC in the cluster into a namespace they control, bypassing namespace isolation and the read-only guarantee of the view role.

Affected products

VendorProductAffectedFixed
Red Hat Red Hat Container Native Virtualization 4.14 — —
Red Hat Red Hat Container Native Virtualization 4.16 — —
Red Hat Red Hat Container Native Virtualization 4.17 — —
Red Hat Red Hat Container Native Virtualization 4.18 — —
Red Hat Red Hat Container Native Virtualization 4.19 — —
Red Hat Red Hat Container Native Virtualization 4.20 — —
Red Hat Red Hat Container Native Virtualization 4.21 — —
Red Hat Red Hat Container Native Virtualization 4.22 — —
Red Hat Red Hat OpenShift Virtualization 4 — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 kubevirt +2 No fix yet —

References