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VULNERABILITIES

CVE-2026-71208 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

KubeSphere's cluster-controller reconciliation (pkg/utils/clusterclient/clusterclient.go, addCluster) processes every Cluster custom resource's connection configuration and immediately calls Discovery.ServerVersion against the CRD-specified Kubernetes API endpoint, which is parsed only for URL syntax (url.Parse) with no allow/deny-list for loopback, RFC1918 private ranges, link-local, or cloud-metadata addresses (e.g. 169.254.169.254).

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:6 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
CNA: TuranSecCVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/ashikmd7/kubeSphere/blob/main/SSRF%20via%20Cluster%20CRD%20KubeConfig/README.md TuranSecBroken LinkExploit
https://github.com/kubesphere/kubesphere TuranSecProductVendor

Weakness Enumeration

CWE-IDCWE NameSource
CWE-918Server-Side Request Forgery (SSRF)TuranSec

Affected Products

ProductVersions
KubeSphere
>= 4.0, < 4.1.3

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • Upgrade: 4.1.3moderate effort

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-71208
NVD Published Date:
Aug 5, 2026
NVD Last Modified:
Aug 26, 2026
Source:
TuranSec
CVE-2026-71208 Details - Not Deferred