CVE-2026-71566— KubeVirt backend is not authenticated
Quick assessment
Affected
openshift-metal3 fakefish
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
openshift-metal3 fakefish是openshift-metal3组织的一款面向服务器与网络环境的管理工具。 openshift-metal3 fakefish 28f9a6b及之前版本存在授权问题漏洞，该漏洞源于KubeVirt依赖挂载到容器中的KUBECONFIG文件，完全忽略FakeFish传入的凭据，可能允许集群中任意用户控制创建FakeFish的用户的虚拟机、开关机及挂载任意CD镜像。
Affected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| openshift-metal3 | fakefish | ≤ 28f9a6b |
affected |
526550a |
unaffected |
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I. Basic Information for CVE-2026-71566
Vulnerability Information
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Vulnerability Title
KubeVirt backend is not authenticated
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
openshift-metal3 fakefish 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
openshift-metal3 fakefish是openshift-metal3组织的一款面向服务器与网络环境的管理工具。 openshift-metal3 fakefish 28f9a6b及之前版本存在授权问题漏洞，该漏洞源于KubeVirt依赖挂载到容器中的KUBECONFIG文件，完全忽略FakeFish传入的凭据，可能允许集群中任意用户控制创建FakeFish的用户的虚拟机、开关机及挂载任意CD镜像。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| openshift-metal3 | fakefish | 0 ~ 28f9a6b | - |
|
II. Public POCs for CVE-2026-71566
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
Qwen3.6-35B-A3B
· 9157 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
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III. Intelligence Information for CVE-2026-71566
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Vendor Advisories for CVE-2026-71566 (1)
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V. Comments for CVE-2026-71566
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