{"cve":"CVE-2026-84720","nvd":{"published":"2026-09-23T20:17:18.753","modified":"2026-09-24T15:17:45.170","status":"Awaiting Analysis","description":"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's no_log masking is applied,\na user with only read access to a workflow — 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 — 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-639"],"references":["https://access.redhat.com/errata/RHSA-2026:71113","https://access.redhat.com/errata/RHSA-2026:71114","https://access.redhat.com/errata/RHSA-2026:71177","https://access.redhat.com/errata/RHSA-2026:71179","https://access.redhat.com/security/cve/CVE-2026-84720"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-84720","score":0.00271,"percentile":0.19327,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}