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Back to active CVEs
Medium · CVSS 5.3CVE-2026-84712

Automation-controller: automation-controller: unauthenticated /api/v2/ping/ discloses automation-mesh instance topology and instance-group membershipCVE-2026-84712

Answer in brief

CVE-2026-84712 records a Medium severity (CVSS 5.3) vulnerability in Automation-controller: automation-controller: unauthenticated /api/v2/ping/ discloses automation-mesh instance topology and instance-group membership. The current sources do not mark it as known exploited. The current feed maps Red Hat/ansible-automation-platform-26/controller-rhel9 (generic), Red Hat/ansible-automation-platform-27/controller-rhel9 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 23, 2026Updated Nov 6, 2026Source checked Nov 8, 2026First seen by HOL Sep 23, 2026Material review Nov 6, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/ansible-automation-platform-26/controller-rhel9 (generic), Red Hat/ansible-automation-platform-27/controller-rhel9 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/ansible-automation-platform-26/controller-rhel9generic*Not reported
Red Hat/ansible-automation-platform-27/controller-rhel9generic*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/ansible-automation-platform-26/controller-rhel9, Red Hat/ansible-automation-platform-27/controller-rhel9.
  2. 2Review the reported fix. Source-reported workaround: 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.

Evidence timeline and material changes

  1. Published upstream

    Sep 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 23, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A flaw was found in the automation-controller API. The unauthenticated health-check endpoint /api/v2/ping/ (ApiV2PingView, AllowAny) over-serializes RBAC-gated automation-mesh data into its anonymous response, exposing the full instance inventory (node hostnames, node types, UUIDs, heartbeats, capacities, and exact versions), all instance-group names and membership, the deployment install UUID, and the active control node. A remote, unauthenticated attacker can use this to map the control plane and fingerprint software versions for targeted attacks. This flaw affects confidentiality only; it does not expose secrets, credentials, or tenant data.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-497
Source
CVE List V5
Source checked
Nov 8, 2026
References
6 linked sources
Open source record