{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-101919", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-28T15:59:56.062Z", "datePublished": "2026-10-05T17:33:44.331Z", "dateUpdated": "2026-10-05T17:33:44.331Z"}, "containers": {"cna": {"title": "Hypershift: hypershift: unsanitized kubeconfig passthrough from tenant namespace to control plane", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in the HyperShift operator. The operator copies user-provided Kubernetes configuration (kubeconfig) secrets directly into the privileged control plane namespace without proper validation or sanitization. An authenticated user with cluster and secret creation permissions can exploit this vulnerability by supplying a configuration containing unauthorized executable plugins. When downstream controllers consume this configuration, an attacker can achieve arbitrary code execution within the control plane."}], "affected": [{"vendor": "Red Hat", "product": "Multicluster Engine for Kubernetes", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "multicluster-engine/hypershift-rhel9-operator", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:multicluster_engine"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-101919", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2542541", "name": "RHBZ#2542541", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-09-28T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "description": "Improper Input Validation", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-20: Improper Input Validation", "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}], "timeline": [{"lang": "en", "time": "2026-09-28T00:00:00.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-09-28T00:00:00.000Z", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-10-05T17:33:44.331Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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