CVE-2026-71566CWE-306

CVE-2026-71566

Critical · published August 17, 2026

CVSS v3.1
9.3
EPSS
0%
Percentile
29.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.3 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00371 · 29.8th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-08-17T19:16Z
References (1)
EPSS history
Timeline
  • 17 AUG 14:22Z
    KubeVirt backend is not authenticated
    cvelistv5