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

Description

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.

Exploitable remotely over the network, with an ordinary account and without any user action; the impact on data or service is limited.

Attack vector

Network

Attack complexity

Low

Privileges required

Low

Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Affected products and versions