by Kastro
Paper/Archive/CVE-2026-71566

CVE-2026-71566

openshift-metal3 fakefish — KubeVirt backend is not authenticated

EPSS 0.4%CVSS 9.3
critical.is priorityof 100
34
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 31.0.310 × 206.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
fakefish≤ 28f9a6b526550aCNA

Scores by source

redhat-cnalr (CNA)9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

advisorygithub.com/openshift-metal3/fakefish/security/advisories/GHSA-qpfr-jqjq-v83w