medium · CVSS 6.5

CVE-2026-84720

Automation-controller: automation-controller: workflowjobnode.ancestor_artifacts lacks prevent_search, exposing no_log set_stats artifacts via orm-traversal count-oracle

Published 23 Sept 2026 · Source updated 6 Nov 2026 · Retrieved 2026-11-06 01:53 UTC

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What happened?

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.

Description supplied by CVE Program. Formatting is simplified; follow the original advisory for full details.

Affected software and versions

Source-provided software and version information
Software	Version information	Fixed version
automation-controllerRed Hat	unaffected: 0:4.6.33-1.el8ap to < *	See vendor advisory
automation-controllerRed Hat	unaffected: 0:4.6.33-1.el8ap to < *	See vendor advisory
automation-controllerRed Hat	unaffected: 0:4.6.33-1.el9ap to < *	See vendor advisory
automation-controllerRed Hat	unaffected: 0:4.6.33-1.el9ap to < *	See vendor advisory
automation-controllerRed Hat	unaffected: 0:4.7.17-1.el9ap to < *	See vendor advisory
automation-controllerRed Hat	unaffected: 0:4.7.17-1.el9ap to < *	See vendor advisory
ansible-automation-platform-26/controller-rhel9Red Hat	unaffected: 1789673739 to < *	See vendor advisory
ansible-automation-platform-27/controller-rhel9Red Hat	unaffected: 1789580684 to < *	See vendor advisory

Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.

Is it being exploited?

This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.

CISA data retrieved 2026-11-06 16:38 UTC. Check CISA ↗

How to respond

Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.

Sources and remediation references

This public advisory does not determine whether a particular server is affected. Records are refreshed as sources change; verify urgent decisions against the original advisory.

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