GHSA-H789-RMCQ-FH7H
Vulnerability from github – Published: 2026-09-23 21:30 – Updated: 2026-09-24 09:31A 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": [],
"aliases": [
"CVE-2026-84720"
],
"database_specific": {
"cwe_ids": [
"CWE-639"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-23T20:17:18Z",
"severity": "MODERATE"
},
"details": "A flaw was found in the Ansible Automation Platform automation-controller. The\nWorkflowJobNode.ancestor_artifacts database column, which stores the raw merged set_stats\nartifacts propagated between workflow nodes, is not wrapped in prevent_search() and is therefore\naccepted for arbitrary field lookups by the REST filter backend, even though it is omitted from\nthe API serializer. Because the column is persisted before Ansible\u0027s no_log masking is applied,\na user with only read access to a workflow \u2014 or, via a regular-expression lookup that bypasses\nthe JSON cross-relation filter guard through the world-readable credential-types endpoint, any\nauthenticated user with no roles \u2014 can use the result count as a boolean/count oracle to recover,\ncharacter by character, secret values that a playbook author explicitly marked no_log, including\nacross organizations.",
"id": "GHSA-h789-rmcq-fh7h",
"modified": "2026-09-24T09:31:50Z",
"published": "2026-09-23T21:30:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84720"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:71113"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:71114"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:71177"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:71179"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-84720"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527214"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
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