CVE-2026-84720

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The\nWorkflowJobNode.ancestor_artifacts database column, which stores the raw merged set_stats\nartifacts propagated between workflow nodes, is not wrapped in prevent_search() and is therefore\naccepted for arbitrary field lookups by the REST filter backend, even though it is omitted from\nthe API serializer. Because the column is persisted before Ansible's no_log masking is applied,\na user with only read access to a workflow \u2014 or, via a regular-expression lookup that bypasses\nthe JSON cross-relation filter guard through the world-readable credential-types endpoint, any\nauthenticated user with no roles \u2014 can use the result count as a boolean/count oracle to recover,\ncharacter by character, secret values that a playbook author explicitly marked no_log, including\nacross organizations."}], "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", 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"cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9"], "defaultStatus": "affected", "packageName": "automation-controller", "product": "Red Hat Ansible Automation Platform 2.6 for RHEL 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:4.7.17-1.el9ap", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2.6::el9"], "defaultStatus": "affected", "packageName": "ansible-automation-platform-26/controller-rhel9", "product": "Red Hat Ansible Automation Platform 2.6", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "1789673739", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2.7::el9"], "defaultStatus": "affected", "packageName": "ansible-automation-platform-27/controller-rhel9", "product": "Red Hat Ansible Automation Platform 2.7", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "1789580684", "versionType": "rpm"}]}], "source": "secalert@redhat.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in the Ansible Automation Platform automation-controller. The\nWorkflowJobNode.ancestor_artifacts database column, which stores the raw merged set_stats\nartifacts propagated between workflow nodes, is not wrapped in prevent_search() and is therefore\naccepted for arbitrary field lookups by the REST filter backend, even though it is omitted from\nthe API serializer. Because the column is persisted before Ansible's no_log masking is applied,\na user with only read access to a workflow \u2014 or, via a regular-expression lookup that bypasses\nthe JSON cross-relation filter guard through the world-readable credential-types endpoint, any\nauthenticated user with no roles \u2014 can use the result count as a boolean/count oracle to recover,\ncharacter by character, secret values that a playbook author explicitly marked no_log, including\nacross organizations."}], "id": "CVE-2026-84720", "lastModified": "2026-11-06T01:17:58.270", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84720", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-24T14:30:07.780697Z", "version": "2.0.3"}}]}, "published": "2026-09-23T20:17:18.753", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:71113"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:71114"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:71177"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:71179"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-84720"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527214"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "secalert@redhat.com", "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: WorkflowJobNode.ancestor_artifacts lacks prevent_search, exposing no_log set_stats artifacts via ORM-traversal count-oracle", "id": "2527214", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527214"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-639", "details": ["A flaw was found in the Ansible Automation Platform automation-controller. The\nWorkflowJobNode.ancestor_artifacts database column, which stores the raw merged set_stats\nartifacts propagated between workflow nodes, is not wrapped in prevent_search() and is therefore\naccepted for arbitrary field lookups by the REST filter backend, even though it is omitted from\nthe API serializer. Because the column is persisted before Ansible's no_log masking is applied,\na user with only read access to a workflow \u2014 or, via a regular-expression lookup that bypasses\nthe JSON cross-relation filter guard through the world-readable credential-types endpoint, any\nauthenticated user with no roles \u2014 can use the result count as a boolean/count oracle to recover,\ncharacter by character, secret values that a playbook author explicitly marked no_log, including\nacross organizations."], "name": "CVE-2026-84720", "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-2026-84720\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-84720"], "statement": "This flaw is an information-exposure weakness in automation-controller: a workflow-artifact\ncolumn that is hidden at the serializer layer and intended to be masked by Ansible's no_log\ncontrol is nonetheless queryable through the generic REST filter backend because it is not\nwrapped in prevent_search(), and it is stored before no_log masking is applied. The\nsecurity-relevant consequence is that a low-privileged or zero-role user can use response counts\nas an oracle to recover, character by character, secret values propagated between workflow nodes\nvia set_stats, including across organizations. It belongs to the same class as other\nprevent_search-omission / open-ORM-traversal findings in the controller filter surface; the\ncorrect fix both wraps the field in prevent_search() and redacts no_log keys before persisting\nthe column, and a durable fix constrains generic relation-traversal filtering.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0:4.7.17-1.el9ap,*]"}}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 99.0, "source": "matching"}]}, "original": {"product": "Red Hat Ansible Automation Platform 2.6 for RHEL 9", "source": "cna", "vendor": "Red Hat"}, "product": "ansible_automation_platform", "vendor": "redhat"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 99.0, "source": "matching"}]}, "original": {"product": "Red Hat Ansible Automation Platform 2", "source": "cna", "vendor": "Red Hat"}, "product": "ansible_automation_platform", "vendor": "redhat"}], "created": "2026-09-23T20:45:09.996901+00:00", "updated": "2026-09-24T03:15:04.789595+00:00", "vendors": ["redhat", "redhat$PRODUCT$ansible_automation_platform"]}