CVE-2026-7163

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El autenticador local concede acceso administrativo completo incondicionalmente a cualquier solicitud que contenga un JWT v\u00e1lido, sin restricciones por endpoint. Un JWT local v\u00e1lido est\u00e1 incrustado como un par\u00e1metro de consulta de texto plano en InfraEnvStatus.ISODownloadURL y es legible por cualquier usuario que tenga derechos de lectura (get rights) sobre un objeto InfraEnv en su propio namespace.\n\nLos componentes afectados se distribuyen como parte de Multicluster Engine (MCE). Los despliegues de Red Hat Advanced Cluster Management (ACM) que incluyen MCE se ven igualmente afectados.\nEste problema no afecta la oferta SaaS alojada (console.redhat.com), que utiliza un modo de autenticaci\u00f3n diferente.\n\nLa explotaci\u00f3n exitosa otorga al atacante la contrase\u00f1a de kubeadmin y el kubeconfig para cualquier cl\u00faster OpenShift aprovisionado a trav\u00e9s del hub afectado, concediendo acceso administrativo de nivel ra\u00edz sin restricciones a esos cl\u00fasteres spoke."}], "id": "CVE-2026-7163", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.7, "impactScore": 4.0, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.7, "impactScore": 4.0, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7163", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-30T13:35:04.958346Z", "version": "2.0.3"}}]}, "published": "2026-04-30T14:16:36.093", "references": [{"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:11511"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:11512"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:12116"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:12337"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:18584"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:18585"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-7163"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2463152"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:11511"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:11512"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:12116"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:12337"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:18584"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:18585"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-7163"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Issue Tracking"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2463152"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7163.json"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-312"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-312"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"acknowledgement": "This issue was discovered by Nick Carboni (Red Hat), Omer Vishlitzky (Red Hat), and Riccardo Piccoli (Red Hat).", "affected_release": [{"advisory": "RHSA-2026:12116", "cpe": "cpe:/a:redhat:multicluster_engine:2.10::el9", "package": "multicluster-engine/assisted-service-9-rhel9:1776983527", "product_name": "multicluster engine for Kubernetes 2.1", "release_date": "2026-04-30T00:00:00Z"}, {"advisory": "RHSA-2026:12337", "cpe": "cpe:/a:redhat:multicluster_engine:2.11::el9", "package": "multicluster-engine/assisted-service-9-rhel9:1776987609", "product_name": "multicluster engine for Kubernetes 2.11", "release_date": "2026-04-30T00:00:00Z"}, {"advisory": "RHSA-2026:11511", "cpe": "cpe:/a:redhat:multicluster_engine:2.7::el8", "package": "multicluster-engine/assisted-service-8-rhel8:1777205801", "product_name": "multicluster engine for Kubernetes 2.7", "release_date": "2026-04-29T00:00:00Z"}, {"advisory": "RHSA-2026:11512", "cpe": "cpe:/a:redhat:multicluster_engine:2.7::el9", "package": "multicluster-engine/assisted-service-9-rhel9:1777205772", "product_name": "multicluster engine for Kubernetes 2.7", "release_date": "2026-04-29T00:00:00Z"}], "bugzilla": {"description": "assisted-service: assisted-service: Authenticated users can gain administrative access to OpenShift clusters via credential disclosure", "id": "2463152", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2463152"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-312", "details": ["A vulnerability in the assisted-service REST API, an optional Assisted Installer (assisted-service) component in the Multicluster Engine (MCE), allows an authenticated user with minimal namespace-scoped privileges to obtain administrative credentials for arbitrary clusters provisioned through the hub. \nThe credentials download endpoint (GET /v2/clusters/{cluster_id}/credentials, which returns the kubeadmin password) and the kubeconfig download endpoint are operational in AUTH_TYPE=local mode, the only authentication mode available in on-premises ACM/MCE hub deployments. The local authenticator unconditionally grants full administrative access to any request bearing a valid JWT, with no per-endpoint restrictions. A valid local JWT is embedded as a plaintext query parameter in InfraEnvStatus.ISODownloadURL and is readable by any user who has get rights on an InfraEnv object in their own namespace.\nThe affected components ship as part of Multicluster Engine (MCE). The Red Hat Advanced Cluster Management (ACM) deployments that include MCE are equally affected.\nThis issue does not affect the hosted SaaS offering (console.redhat.com), which uses a different authentication mode.\nSuccessful exploitation gives the attacker the kubeadmin password and kubeconfig for any OpenShift cluster provisioned through the affected hub, granting unrestricted root-level administrative access to those spoke clusters."], "name": "CVE-2026-7163", "public_date": "2026-04-30T12:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-7163\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-7163"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 99.0, "confidence_source": "matching", "scores": [{"score": 99.0, "source": "matching"}]}, "original": {"product": "Multicluster Engine for Kubernetes", "source": "cna", "vendor": "Red Hat"}, "product": "multicluster_engine_for_kubernetes", "vendor": "redhat"}], "created": "2026-04-30T14:45:23.913104+00:00", "updated": "2026-05-02T11:00:06.787818+00:00", "vendors": ["redhat", "redhat$PRODUCT$multicluster_engine_for_kubernetes"]}