{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-66785", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-66785", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-08-20T18:15:06.802Z", "updatedAt": "2026-10-19T17:30:24.677Z", "importedAt": "2026-10-24T01:58:25.636Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Submariner: submariner: missing validation of remote endpoint subnets and clusterid enables cross-cluster traffic hijack", "summary": "A flaw was found in Submariner. This vulnerability allows a malicious cluster (spoke) to redirect network traffic from other connected clusters (peer clusters) by publishing a specially crafted network endpoint. The system fails to properly validate the network subnets provided by the malicious cluster, enabling it to declare arbitrary network ranges. Consequently, all network traffic intended for these arbitrary ranges from peer clusters will be rerouted through the attacker's tunnel, potentially leading to unauthorized information disclosure or network disruption.", "affected": [ { "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.16", "packageName": "rhacm2/lighthouse-agent-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected", "versions": [ { "version": "1790670439", "status": "unaffected", "versionType": "rpm", "lessThan": "*" } ] }, { "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.16", "packageName": "rhacm2/lighthouse-coredns-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected", "versions": [ { "version": "1790670231", "status": "unaffected", "versionType": "rpm", "lessThan": "*" } ] }, { "vendor": "Red Hat", "product": "Red Hat Advanced Cluster 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"defaultStatus": "affected", "versions": [ { "version": "1788043970", "status": "unaffected", "versionType": "rpm", "lessThan": "*" } ] }, { "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "packageName": "rhacm2/submariner-addon-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected", "versions": [] }, { "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "packageName": "rhacm2/submariner-operator-bundle", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected", "versions": [] } ] } } }