CVE-2026-71566

KubeVirt backend is not authenticated

Published Aug 17, 2026 CVSS 3.1 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Openshift-metal3
Openshift-metal3 fakefish
Vendors & Products Openshift-metal3
Openshift-metal3 fakefish
Type Values Removed Values Added
Description 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.
Title KubeVirt backend is not authenticated
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 9.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat-cnalr
Published
Updated
Aug 17, 2026, 4:00 PM
Reserved
Aug 7, 2026, 12:08 PM
Status
Awaiting Analysis
Published
Aug 17, 2026, 3:16 PM
Modified
Sep 1, 2026, 9:03 PM