{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-66783", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-07-27T17:51:24.885Z", "datePublished": "2026-08-18T17:06:02.815Z", "dateUpdated": "2026-08-18T17:06:02.815Z"}, "containers": {"cna": {"title": "Submariner-operator: submariner-operator: arbitrary image override enables privileged code execution on every node", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in the `submariner-operator` component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource (CR), to specify an unvalidated image path. This lack of validation enables an attacker to execute arbitrary code with elevated privileges across the entire cluster, including control-plane nodes, by deploying a malicious image."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rhacm2/subctl-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:acm:2"]}, {"vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rhacm2/submariner-addon-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:acm:2"]}, {"vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rhacm2/submariner-operator-bundle", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:acm:2"]}, {"vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rhacm2/submariner-rhel9-operator", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:acm:2"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-66783", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507528", "name": "RHBZ#2507528", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-08-18T16:35:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "description": "Improper Input Validation", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-20: Improper Input Validation", "workarounds": [{"lang": "en", "value": "To mitigate this issue, restrict access to cluster-admin roles and carefully control permissions for users or service accounts that can modify Submariner Custom Resources. Ensure that only trusted and authorized personnel have the ability to patch Submariner CRs, thereby preventing the injection of malicious images."}], "timeline": [{"lang": "en", "time": "2026-07-27T00:00:00.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-08-18T16:35:00.000Z", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-08-18T17:06:02.815Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:acm:2"], "defaultStatus": "affected", "packageName": "rhacm2/subctl-rhel9", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:acm:2"], "defaultStatus": "affected", "packageName": "rhacm2/submariner-addon-rhel9", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:acm:2"], "defaultStatus": "affected", "packageName": "rhacm2/submariner-operator-bundle", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:acm:2"], "defaultStatus": "affected", "packageName": "rhacm2/submariner-rhel9-operator", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in the `submariner-operator` component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource (CR), to specify an unvalidated image path. This lack of validation enables an attacker to execute arbitrary code with elevated privileges across the entire cluster, including control-plane nodes, by deploying a malicious image."}], "id": "CVE-2026-66783", "lastModified": "2026-08-18T17:17:00.840", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.5, "impactScore": 6.0, "source": "secalert@redhat.com", "type": "Primary"}]}, "published": "2026-08-18T17:17:00.840", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-66783"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507528"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "secalert@redhat.com", "type": "Primary"}]}

{}

{}