CVE-2026-71208

{"id": "CVE-2026-71208", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71208", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-05T13:20:09.859595Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "affectedData": [{"vendor": "kubesphere", "product": "KubeSphere", "versions": [{"status": "affected", "version": "4.0.0", "versionType": "custom", "lessThanOrEqual": "4.1.3-rc.0"}], "programFiles": ["pkg/utils/clusterclient/clusterclient.go"], "defaultStatus": "unknown"}]}], "published": "2026-08-05T08:16:42.847", "references": [{"url": "https://github.com/ashikmd7/kubeSphere/blob/main/SSRF%20via%20Cluster%20CRD%20KubeConfig/README.md", "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"}, {"url": "https://github.com/kubesphere/kubesphere", "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "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)."}], "lastModified": "2026-08-26T17:36:16.900", "sourceIdentifier": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"}