CVE-2026-17527: Red Hat Container Native Virtualization 4.14

High severity, CVSS 7.7. EPSS: 0.6% chance of exploitation in the next 30 days.

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

• Red Hat Red Hat Container Native Virtualization 4.14: before 1788157795 (fixed in 1788157795)
• Red Hat Red Hat Container Native Virtualization 4.16: before 1787585647 (fixed in 1787585647)
• Red Hat Red Hat Container Native Virtualization 4.18: before 1787586357 (fixed in 1787586357)
• Red Hat Red Hat Container Native Virtualization 4.19: before 1787234290 (fixed in 1787234290)
• Red Hat Red Hat Container Native Virtualization 4.20: before 1787231995 (fixed in 1787231995)
• Red Hat Red Hat Container Native Virtualization 4.21: before 1787235286 (fixed in 1787235286)
• Red Hat Red Hat Container Native Virtualization 4.22: before 1787295217 (fixed in 1787295217)
• Red Hat Red Hat Openshift Virtualization 4

Published 2026-07-27. Last modified 2026-09-21.