CVE-2026-71566
CriticalCVSS 9.3Summary
FakeFish handles incoming credentials by passing them down to scripts. This works for real hardware because in the end it's up to the BMC to validate them. However, KubeVirt relies on a KUBECONFIG file mounted to the container and completely ignores the credentials. This allows any user of the cluster to control VMs of the user that created fakefish, power them on and off, and mount arbitrary CD images to them.
Risk Assessment
Unauthorized cluster users can take control of virtual machines, potentially leading to confidentiality, integrity, and availability breaches.
Recommendation
Apply patches or configuration changes so that FakeFish/KubeVirt properly validate credentials, or restrict access to fakefish functionality.
Original NVD description (English source)
FakeFish handles incoming credentials by passing them down to scripts. This works for real hardware because in the end it's up to the BMC to validate them. However, KubeVirt relies on a KUBECONFIG file mounted to the container and completely ignores the credentials. This allows any user of the cluster to control VMs of the user that created fakefish, power them on and off, and mount arbitrary CD images to them.