{"id":"CVE-2026-84712","state":"PUBLISHED","title":"Automation-controller: automation-controller: unauthenticated /api/v2/ping/ discloses automation-mesh instance topology and instance-group membership","description":"A flaw was found in the automation-controller API. The\n                  unauthenticated health-check endpoint /api/v2/ping/\n                  (ApiV2PingView, AllowAny) over-serializes RBAC-gated\n                  automation-mesh data into its anonymous response, exposing the\n                  full instance inventory (node hostnames, node types, UUIDs,\n                  heartbeats, capacities, and exact versions), all instance-group\n                  names and membership, the deployment install UUID, and the\n                  active control node. A remote, unauthenticated attacker can use\n                  this to map the control plane and fingerprint software versions\n                  for targeted attacks. This flaw affects confidentiality only;\n                  it does not expose secrets, credentials, or tenant data.","publishedAt":"2026-09-23T19:40:22.582Z","updatedAt":"2026-10-16T11:55:07.623Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"redhat"},"assigner":"redhat","products":["Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 8","Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 9","Red Hat Red Hat Ansible Automation Platform 2.6 for RHEL 9","Red Hat Red Hat Ansible Automation Platform 2.6","Red Hat Red Hat Ansible Automation Platform 2.7"],"affected":[{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.5 for RHEL 8","packageName":"automation-controller","defaultStatus":"affected","versions":[{"version":"0:4.6.33-1.el8ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","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","packageName":"automation-controller","defaultStatus":"affected","versions":[{"version":"0:4.6.33-1.el9ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","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","packageName":"automation-controller","defaultStatus":"affected","versions":[{"version":"0:4.7.17-1.el9ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","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 2.6","packageName":"ansible-automation-platform-26/controller-rhel9","defaultStatus":"affected","versions":[{"version":"1789673739","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.7","packageName":"ansible-automation-platform-27/controller-rhel9","defaultStatus":"affected","versions":[{"version":"1789580684","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.7::el9"]}],"references":["https://access.redhat.com/errata/RHSA-2026:71113","https://access.redhat.com/errata/RHSA-2026:71114","https://access.redhat.com/errata/RHSA-2026:71177","https://access.redhat.com/errata/RHSA-2026:71179","https://access.redhat.com/security/cve/CVE-2026-84712","https://bugzilla.redhat.com/show_bug.cgi?id=2527196"],"weaknesses":["CWE-497"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/84xxx/CVE-2026-84712.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-84712","state":"PUBLISHED","datePublished":"2026-09-23T19:40:22.582Z","dateUpdated":"2026-10-16T11:55:07.623Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2026-09-02T00:44:46.968Z"},"containers":{"cna":{"title":"Automation-controller: automation-controller: unauthenticated /api/v2/ping/ discloses automation-mesh instance topology and instance-group membership","descriptions":[{"lang":"en","value":"A flaw was found in the automation-controller API. The\n                  unauthenticated health-check endpoint /api/v2/ping/\n                  (ApiV2PingView, AllowAny) over-serializes RBAC-gated\n                  automation-mesh data into its anonymous response, exposing the\n                  full instance inventory (node hostnames, node types, UUIDs,\n                  heartbeats, capacities, and exact versions), all instance-group\n                  names and membership, the deployment install UUID, and the\n                  active control node. A remote, unauthenticated attacker can use\n                  this to map the control plane and fingerprint software versions\n                  for targeted attacks. This flaw affects confidentiality only;\n                  it does not expose secrets, credentials, or tenant data."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.5 for RHEL 8","packageName":"automation-controller","defaultStatus":"affected","versions":[{"version":"0:4.6.33-1.el8ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","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","packageName":"automation-controller","defaultStatus":"affected","versions":[{"version":"0:4.6.33-1.el9ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","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","packageName":"automation-controller","defaultStatus":"affected","versions":[{"version":"0:4.7.17-1.el9ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","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 2.6","packageName":"ansible-automation-platform-26/controller-rhel9","defaultStatus":"affected","versions":[{"version":"1789673739","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.7","packageName":"ansible-automation-platform-27/controller-rhel9","defaultStatus":"affected","versions":[{"version":"1789580684","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.7::el9"]}],"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/errata/RHSA-2026:71177","name":"RHSA-2026:71177","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:71179","name":"RHSA-2026:71179","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-84712","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2527196","name":"RHBZ#2527196","tags":["issue-tracking","x_refsource_REDHAT"]}],"metrics":[{"other":{"content":{"value":"Moderate","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-497","description":"Exposure of Sensitive System Information to an Unauthorized Control Sphere","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateUpdated":"2026-10-16T11:55:07.623Z"},"datePublic":"2026-09-23T00:00:00.000Z","x_redhatCweChain":"CWE-497: Exposure of Sensitive System Information to an Unauthorized Control Sphere","workarounds":[{"lang":"en","value":"There is no configuration option that trims the data returned by the unauthenticated /api/v2/ping/ endpoint (also reachable as /api/controller/v2/ping/). Exposure can be reduced by restricting network access to the automation-controller API so that only trusted networks and health probes can reach it: block or restrict external access to the /api/v2/ping/ and /api/controller/v2/ping/ routes at the reverse proxy, load balancer, or firewall, and front health checks with an infrastructure-level probe that does not proxy the /ping/ endpoint to untrusted clients. The definitive fix is to update to a version of automation-controller that no longer serializes instance, instance-group, install UUID, and active-node data in the unauthenticated response."}],"timeline":[{"lang":"en","time":"2026-09-02T00:44:52.036Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-09-23T00:00:00.000Z","value":"Made public."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-24T14:29:05.289631Z","id":"CVE-2026-84712","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-24T14:32:34.757Z"}}]}}}