CVE-2026-66788

{"id": "CVE-2026-66788", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-66788", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-20T18:52:23.727449Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secalert@redhat.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 6.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "secalert@redhat.com", "affectedData": [{"cpes": ["cpe:/a:redhat:acm:2.16::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.16", "versions": [{"status": "unaffected", "version": "1790670439", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/lighthouse-agent-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:acm:2.16::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.16", "versions": [{"status": "unaffected", "version": "1790670231", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/lighthouse-coredns-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:acm:2.16::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.16", "versions": [{"status": "unaffected", "version": "1790670243", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/subctl-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:acm:2.16::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.16", "versions": [{"status": "unaffected", "version": "1790670912", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/submariner-rhel9-operator", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:acm:2.17::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.17", "versions": [{"status": "unaffected", "version": "1788023916", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/lighthouse-agent-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:acm:2.17::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.17", "versions": [{"status": "unaffected", "version": "1788023940", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/lighthouse-coredns-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:acm:2.17::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.17", "versions": [{"status": "unaffected", "version": "1788105072", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/subctl-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:acm:2.17::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.17", "versions": [{"status": "unaffected", "version": "1788073481", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/submariner-rhel9-operator", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}]}], "published": "2026-08-20T19:16:58.823", "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:63016", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:85227", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-66788", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507533", "source": "secalert@redhat.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-1104"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in Lighthouse. A remote attacker, by compromising a spoke cluster, can exploit a vulnerability where the destination namespace for resource injection is derived from an attacker-controlled label or annotation on the broker object. This allows the attacker to inject unauthorized EndpointSlices and ServiceImports into any namespace on peer clusters, including critical system namespaces like kube-system and openshift-*. This could lead to privilege escalation or other forms of system compromise within the cluster."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en Lighthouse. Un atacante remoto, al comprometer un cl\u00faster spoke, puede explotar una vulnerabilidad donde el espacio de nombres de destino para la inyecci\u00f3n de recursos se deriva de una etiqueta o anotaci\u00f3n controlada por el atacante en el objeto broker. Esto permite al atacante inyectar EndpointSlices y ServiceImports no autorizados en cualquier espacio de nombres en cl\u00fasteres pares, incluyendo espacios de nombres de sistema cr\u00edticos como kube-system y openshift-*. Esto podr\u00eda conducir a una escalada de privilegios u otras formas de compromiso del sistema dentro del cl\u00faster."}], "lastModified": "2026-10-19T17:17:21.607", "sourceIdentifier": "secalert@redhat.com"}