KubeVirt backend is not authenticated

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-71566
StatePUBLISHED
Assignerredhat-cnalr
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-17 15:16:57 UTC
Updated2026-08-17 16:17:44 UTC
DescriptionFakeFish 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 And Classification

Primary CVSS: v3.1 9.3 CRITICAL from 74b3a70d-cca6-4d34-9789-e83b222ae3be

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H

EPSS: 0.002120000 probability, percentile 0.117370000 (date 2026-08-18)

Problem Types: CWE-306 | CWE-306 CWE-306 Missing authentication for critical function

VersionSourceTypeScoreSeverityVector
3.174b3a70d-cca6-4d34-9789-e83b222ae3beSecondary9.3CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H
3.1CNACVSS9.3CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Openshift-metal3 Fakefish affected 28f9a6b git Not specified
CNA Openshift-metal3 Fakefish unaffected 526550a git Not specified

References

ReferenceSourceLinkTags
github.com/openshift-metal3/fakefish/security/advisories/GHSA-qpfr-jqjq-... 74b3a70d-cca6-4d34-9789-e83b222ae3be github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report