{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-84716", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-02T01:03:53.834Z", "datePublished": "2026-09-23T19:40:28.390Z", "dateUpdated": "2026-09-24T03:41:27.061Z"}, "containers": {"cna": {"title": "Automation-controller: automation-controller: instance install_bundle issues 10-year, non-revocable receptor mesh-ca certificates for caller-chosen (and case-variant impersonating) hostnames", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in the automation-controller instance\n install-bundle endpoint. When a System Administrator downloads\n an execution/hop node's install bundle, the controller signs an\n X.509 certificate with the receptor mesh certificate authority\n in which the Common Name, DNS subject-alternative-name, and\n receptor node-id are taken verbatim from the caller-chosen\n instance hostname, with a hard-coded ten-year validity, a random\n serial, and no issuance log or revocation list. Because the\n hostname charset validator is case-insensitive while the\n uniqueness validator is case-sensitive, an administrator can\n register a case variant of an existing control node's hostname\n and obtain a mesh-CA-signed certificate that TLS peers, which\n match hostnames case-insensitively, accept as that control node.\n In managed/hosted deployments \u2014 where the customer holds\n controller superuser but the platform operator runs the mesh \u2014\n this yields a long-lived, non-revocable mesh peer credential and,\n with an on-path position, TLS impersonation or interception of\n control/hybrid mesh nodes. It does not grant direct remote code\n execution, because receptor work submission is gated by a\n separate signing key not included in the bundle."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2.5 for RHEL 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "automation-controller", "defaultStatus": "affected", "versions": [{"version": "0:4.6.33-1.el8ap", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:ansible_automation_platform:2.5::el8", "cpe:/a:redhat:ansible_automation_platform:2.5::el9", "cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8", "cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9", "cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8", "cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9"]}, {"vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2.5 for RHEL 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "automation-controller", "defaultStatus": "affected", "versions": [{"version": "0:4.6.33-1.el9ap", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:ansible_automation_platform:2.5::el8", "cpe:/a:redhat:ansible_automation_platform:2.5::el9", "cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8", "cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9", "cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8", "cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9"]}, {"vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2.6 for RHEL 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "automation-controller", "defaultStatus": "affected", "versions": [{"version": "0:4.7.17-1.el9ap", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:ansible_automation_platform:2.6::el10", "cpe:/a:redhat:ansible_automation_platform:2.6::el9", "cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10", "cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9", "cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9"]}, {"vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "ansible-automation-platform-26/controller-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2"]}, {"vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "ansible-automation-platform-27/controller-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2"]}], "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:71113", "name": "RHSA-2026:71113", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:71114", "name": "RHSA-2026:71114", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/security/cve/CVE-2026-84716", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527199", "name": "RHBZ#2527199", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-09-23T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-266", "description": "Incorrect Privilege Assignment", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-266: Incorrect Privilege Assignment", "timeline": [{"lang": "en", "time": "2026-09-02T01:03:49.507Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-09-23T00:00:00.000Z", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-09-24T03:41:27.061Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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When a System Administrator downloads\n an execution/hop node's install bundle, the controller signs an\n X.509 certificate with the receptor mesh certificate authority\n in which the Common Name, DNS subject-alternative-name, and\n receptor node-id are taken verbatim from the caller-chosen\n instance hostname, with a hard-coded ten-year validity, a random\n serial, and no issuance log or revocation list. Because the\n hostname charset validator is case-insensitive while the\n uniqueness validator is case-sensitive, an administrator can\n register a case variant of an existing control node's hostname\n and obtain a mesh-CA-signed certificate that TLS peers, which\n match hostnames case-insensitively, accept as that control node.\n In managed/hosted deployments \u2014 where the customer holds\n controller superuser but the platform operator runs the mesh \u2014\n this yields a long-lived, non-revocable mesh peer credential and,\n with an on-path position, TLS impersonation or interception of\n control/hybrid mesh nodes. It does not grant direct remote code\n execution, because receptor work submission is gated by a\n separate signing key not included in the bundle."}], "id": "CVE-2026-84716", "lastModified": "2026-09-24T04:18:02.027", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 4.7, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-09-23T20:17:18.210", "references": [{"source": "[email protected]", "url": "https://access.redhat.com/errata/RHSA-2026:71113"}, {"source": "[email protected]", "url": "https://access.redhat.com/errata/RHSA-2026:71114"}, {"source": "[email protected]", "url": "https://access.redhat.com/security/cve/CVE-2026-84716"}, {"source": "[email protected]", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527199"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-266"}], "source": "[email protected]", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2026:71113", "cpe": "cpe:/a:redhat:ansible_automation_platform:2.6::el9", "package": "automation-controller-0:4.7.17-1.el9ap", "product_name": "Red Hat Ansible Automation Platform 2.6 for RHEL 9", "release_date": "2026-09-23T00:00:00Z"}], "bugzilla": {"description": "automation-controller: automation-controller: instance install_bundle issues 10-year, non-revocable receptor mesh-CA certificates for caller-chosen (and case-variant impersonating) hostnames", "id": "2527199", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527199"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N", "status": "verified"}, "cwe": "CWE-266", "details": ["A flaw was found in the automation-controller instance\ninstall-bundle endpoint. When a System Administrator downloads\nan execution/hop node's install bundle, the controller signs an\nX.509 certificate with the receptor mesh certificate authority\nin which the Common Name, DNS subject-alternative-name, and\nreceptor node-id are taken verbatim from the caller-chosen\ninstance hostname, with a hard-coded ten-year validity, a random\nserial, and no issuance log or revocation list. Because the\nhostname charset validator is case-insensitive while the\nuniqueness validator is case-sensitive, an administrator can\nregister a case variant of an existing control node's hostname\nand obtain a mesh-CA-signed certificate that TLS peers, which\nmatch hostnames case-insensitively, accept as that control node.\nIn managed/hosted deployments \u2014 where the customer holds\ncontroller superuser but the platform operator runs the mesh \u2014\nthis yields a long-lived, non-revocable mesh peer credential and,\nwith an on-path position, TLS impersonation or interception of\ncontrol/hybrid mesh nodes. It does not grant direct remote code\nexecution, because receptor work submission is gated by a\nseparate signing key not included in the bundle."], "name": "CVE-2026-84716", "package_state": [{"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Affected", "package_name": "ansible-automation-platform-26/controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Affected", "package_name": "ansible-automation-platform-27/controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}], "public_date": "2026-09-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-84716\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-84716"], "threat_severity": "Moderate"}

{"created": "2026-09-23T20:45:09.997195+00:00", "updated": "2026-09-23T20:45:09.997200+00:00", "vendors": []}