CVE-2026-17527 Missing authorization in Red Hat Container Native Virtualization 4.14
A misconfigured ClusterRole allows users with view access to clone any PVC, bypassing namespace isolation and exfiltrating data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17527?
CVE-2026-17527 is a high-severity missing authorization vulnerability in Red Hat Container Native Virtualization 4.14, published on 27 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-17527?
How do I fix CVE-2026-17527?
No fix has been published for CVE-2026-17527 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-17527 being exploited?
There is no known exploitation of CVE-2026-17527 in the wild and no public exploit code.
Sources
Also known as AZL-94193, AZL-94241, GHSA-2cmm-29f6-xcpx.