CVE-2026-66781

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Such access enables an attacker to passively decrypt network traffic flowing between any two clusters in the mesh, resulting in sensitive information disclosure."}], "id": "CVE-2026-66781", "lastModified": "2026-10-19T17:17:20.993", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-66781", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-18T19:21:35.955137Z", "version": "2.0.3"}}]}, "published": "2026-08-18T17:17:00.580", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60386"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60387"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60388"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60389"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60390"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60391"}, {"source": "secalert@redhat.com", "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-2026-66781"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507526"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-749"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"bugzilla": {"description": "submariner-operator: submariner-operator: IPsec PSK stored cleartext in Submariner CR spec", "id": "2507526", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507526"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-312", "details": ["A flaw was found in the Submariner operator. The Submariner Custom Resource (CR), used for configuring network connectivity, stores the IPsec pre-shared key (PSK) in an unencrypted format. This key, which is critical for securing communication between Kubernetes clusters, can be accessed by unauthorized parties. Such access enables an attacker to passively decrypt network traffic flowing between any two clusters in the mesh, resulting in sensitive information disclosure."], "mitigation": {"lang": "en:us", "value": "To mitigate the risk of IPsec pre-shared key (PSK) disclosure, implement strict Kubernetes Role-Based Access Control (RBAC) policies to limit access to Submariner Custom Resources. Ensure that only authorized administrators and systems are granted permissions to view `submariner` Custom Resources within their namespaces. Additionally, exercise caution when collecting and storing diagnostic data, such as must-gather bundles, and when managing GitOps repositories, as these may inadvertently expose the cleartext PSK."}, "name": "CVE-2026-66781", "package_state": [{"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/subctl-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/submariner-addon-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/submariner-operator-bundle", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/submariner-rhel9-operator", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}], "public_date": "2026-08-18T16:35:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-66781\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-66781"], "statement": "This Important vulnerability in submariner-operator exposes the IPsec pre-shared key (PSK) in cleartext within the Submariner Custom Resource (CR) specification. As Custom Resources are not encrypted by default in etcd on OpenShift, and the PSK is identical across all clusters in a mesh, its disclosure via `kubectl get submariner -o yaml` or through must-gather bundles allows an attacker with appropriate permissions to passively decrypt traffic between any two connected clusters.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 90.0, "confidence_source": "matching", "scores": [{"score": 90.0, "source": "matching"}]}, "original": {"product": "Red Hat Advanced Cluster Management for Kubernetes 2", "source": "cna", "vendor": "Red Hat"}, "product": "advanced_cluster_management_for_kubernetes", "vendor": "redhat"}], "created": "2026-08-18T19:00:12.168371+00:00", "updated": "2026-09-02T08:00:14.123976+00:00", "vendors": ["redhat", "redhat$PRODUCT$advanced_cluster_management_for_kubernetes"]}