Vulnerability · Published Sep 23, 2026 · Assigned by redhat
CVE-2026-84720Automation-controller: automation-controller: workflowjobnode.ancestor_artifacts lacks prevent_search, exposing no_log set_stats artifacts via orm-traversal count-oracle
Medium 6.5
In plain English
A medium-severity authorization bypass via user-controlled key in Red Hat Ansible Automation Platform 2.5 for RHEL 8 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 | see references |
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 | see references |
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 | see references |
| Red Hat | Red Hat Ansible Automation Platform 2.6 | see references |
| Red Hat | Red Hat Ansible Automation Platform 2.7 | see references |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- RHSA-2026:71113 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:71114 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:71177 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:71179 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-84720 vdb-entry, x_refsource_REDHAT
- RHBZ#2527214 issue-tracking, x_refsource_REDHAT