Medium severity6.5NVD Advisory· Published Aug 5, 2026· Updated Aug 26, 2026
CVE-2026-71208
CVE-2026-71208
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).
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Affected products
1Patches
Vulnerability mechanics
References
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