Bug 2512367 (CVE-2026-71458)

Summary:	CVE-2026-71458 automation-controller: automation-controller-container: automation-controller: Named-URL 404 body oracle enables cross-tenant resource name enumeration
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	blonkoruuk, dschmidt, ikhan, jlanda, kshier, rbobbitt, security-response-team, simaishi, stcannon, teagle, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	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.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Deadline:	2026-09-06

Description OSIDB Bzimport 2026-08-06 22:50:19 UTC

A flaw was found in automation-controller. The named-URL resolution middleware resolves resource lookups against the unfiltered queryset before RBAC enforcement,
  ▎ and the 403-to-404 shim does not normalize the response body for the pk=0 miss path. An attacker can distinguish "Not found." (resource exists but access 
  ▎ denied) from "No <Model> matches the given query." (resource does not exist), enabling cross-tenant enumeration of organization names, credential names, 
  ▎ inventory names, and hostnames.

Comment 1 Jon Orris 2026-09-23 20:49:39 UTC

This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.6 for RHEL 10
  Red Hat Ansible Automation Platform 2.6 for RHEL 9

Via RHSA-2026:71113 https://access.redhat.com/errata/RHSA-2026:71113

Comment 2 Jon Orris 2026-09-23 21:06:35 UTC

This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.5 for RHEL 9
  Red Hat Ansible Automation Platform 2.5 for RHEL 8

Via RHSA-2026:71114 https://access.redhat.com/errata/RHSA-2026:71114

Comment 3 bigchill 2026-10-20 08:47:34 UTC

A flaw was found in automation-controller. https://geometry-dashpc.io The named-URL resolution middleware resolves resource lookups against the unfiltered queryset before RBAC enforcement,
  ▎ and the 403-to-404 shim does not normalize the response body for the pk=0 miss path. An attacker can distinguish "Not found." (resource exists but access 
  ▎ denied) from "No <Model> matches the given query." (resource does not exist), enabling cross-tenant enumeration of organization names, credential names, 
  ▎ inventory names, and hostnames.