CVE-2026-17527highCWE-639

CVE-2026-17527: high-severity vulnerability in Red Hat Container Native Virtualization 4.14

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

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.7epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected products
Red Hat · Red Hat Container Native Virtualization 4.14Red Hat · Red Hat Container Native Virtualization 4.16Red Hat · Red Hat Container Native Virtualization 4.17Red Hat · Red Hat Container Native Virtualization 4.18Red Hat · Red Hat Container Native Virtualization 4.19Red Hat · Red Hat Container Native Virtualization 4.20Red Hat · Red Hat Container Native Virtualization 4.21Red Hat · Red Hat Container Native Virtualization 4.22Red Hat · Red Hat OpenShift Virtualization 4
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