CVE-2026-71566
KubeVirt backend is not authenticated
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.
INFO
Published Date :
Aug. 17, 2026, 3:16 p.m.
Last Modified :
Aug. 17, 2026, 3:16 p.m.
Remotely Exploit :
Yes !
Source :
74b3a70d-cca6-4d34-9789-e83b222ae3be
Affected Products
The following products are affected by CVE-2026-71566
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 74b3a70d-cca6-4d34-9789-e83b222ae3be |
Solution
- Update KubeVirt to validate credentials before VM operations.
- Review authentication and authorization mechanisms for KubeVirt.
- Restrict access to KUBECONFIG files within the cluster.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-71566.
| URL | Resource |
|---|---|
| https://github.com/openshift-metal3/fakefish/security/advisories/GHSA-qpfr-jqjq-v83w |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-71566 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-71566
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-71566 vulnerability anywhere in the article.