---
id: CVE-2026-84720
title: A flaw was found in the Ansible Automation Platform automation-controller
summary: >-
  A flaw was found in the Ansible Automation Platform automation-controller. The

  WorkflowJobNode.ancestor_artifacts database column, which stores the raw
  merged set_stats

  artifacts propagated between workflow nodes, is not wrapped in preve…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-639
vendor: Red Hat
product: automation-controller
affected:
  - automation-controller (all versions)
  - automation-controller (all versions)
  - automation-controller (all versions)
  - ansible-automation-platform-26/controller-rhel9 (all versions)
  - ansible-automation-platform-27/controller-rhel9 (all versions)
patched:
  - ansible_automation_platform_2_5_for_rhel 8
  - ansible_automation_platform_2_5_for_rhel 9
  - ansible_automation_platform_2_6_for_rhel 9
  - ansible_automation_platform 2.6
  - ansible_automation_platform 2.7
published: '2026-09-23'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T15:17:45.170'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84720'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:71113'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:71114'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:71177'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:71179'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-84720'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2527214'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84720.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-84720'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84720'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-24T14:30:07.780697Z'
ingestedAt: '2026-09-23T20:32:10.753Z'
epss: 0.00271
epssPercentile: 0.17126
---

## Overview

A flaw was found in the Ansible Automation Platform automation-controller. The
WorkflowJobNode.ancestor_artifacts database column, which stores the raw merged set_stats
artifacts propagated between workflow nodes, is not wrapped in prevent_search() and is therefore
accepted for arbitrary field lookups by the REST filter backend, even though it is omitted from
the API serializer. Because the column is persisted before Ansible's no_log masking is applied,
a user with only read access to a workflow — or, via a regular-expression lookup that bypasses
the JSON cross-relation filter guard through the world-readable credential-types endpoint, any
authenticated user with no roles — can use the result count as a boolean/count oracle to recover,
character by character, secret values that a playbook author explicitly marked no_log, including
across organizations.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:71114** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9 · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:71114)
- **RHSA-2026:71113** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.6 for RHEL 9 · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:71113)
- **RHSA-2026:71179** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.6 · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:71179)
- **RHSA-2026:71177** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.7 · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:71177)