# CVE-2026-71458: Automation-controller: automation-controller-container: automation-controller: named-url 404 body oracle enables cross-tenant resource name enumeration

Status: published. Published: 2026-09-23. Updated: 2026-11-05.

URLModificationMiddleware resolves named-URL lookups
              against unfiltered Model.objects before RBAC. The 403→404
              shim only rewrites 403 responses, leaving the pk=0 miss
              path with a different 404 detail string. Differential
              "Not found." vs "No <Model> matches..." reveals whether
              a named resource (org, credential, inventory, host) exists
              anywhere on the platform. Enables cross-tenant internal
              hostname enumeration.

## Remediation

- workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. (source: CNA: redhat)

## Affected products and versions

- Red Hat / Red Hat Ansible Automation Platform 2.5 for RHEL 8 (automation-controller): ≥ 0:4.6.33-1.el8ap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.5 for RHEL 9 (automation-controller): ≥ 0:4.6.33-1.el9ap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.6 for RHEL 9 (automation-controller): ≥ 0:4.7.17-1.el9ap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.6 (ansible-automation-platform-26/controller-rhel9): ≥ 1789673739; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.7 (ansible-automation-platform-27/controller-rhel9): ≥ 1789580684; < * (unaffected, rpm). Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.30% as of 2026-11-05; percentile 23.15%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-204

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2026:71113 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:71114 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:71177 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:71179 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-71458 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2512367 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-71458; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-71458; retrieved 2026-11-05; source updated Not reported

Revision: aeb5d675058d475b39447df4a266d12caeb3ca2e71f0a90bb622a1200c01daf2

Canonical: https://y2.dev/cve/CVE-2026-71458

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