CVE-2026-71458
Automation-controller: automation-controller-container: automation-controller: named-url 404 body oracle enables cross-tenant resource name enumeration
What happened?
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.
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| automation-controllerRed Hat | unaffected: 0:4.6.33-1.el8ap to < * | See vendor advisory |
| automation-controllerRed Hat | unaffected: 0:4.6.33-1.el8ap to < * | See vendor advisory |
| automation-controllerRed Hat | unaffected: 0:4.6.33-1.el9ap to < * | See vendor advisory |
| automation-controllerRed Hat | unaffected: 0:4.6.33-1.el9ap to < * | See vendor advisory |
| automation-controllerRed Hat | unaffected: 0:4.7.17-1.el9ap to < * | See vendor advisory |
| automation-controllerRed Hat | unaffected: 0:4.7.17-1.el9ap to < * | See vendor advisory |
| ansible-automation-platform-26/controller-rhel9Red Hat | unaffected: 1789673739 to < * | See vendor advisory |
| ansible-automation-platform-27/controller-rhel9Red Hat | unaffected: 1789580684 to < * | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.
Sources and remediation references
- https://www.cve.org/CVERecord?id=CVE-2026-71458
- 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-2026-71458
- https://bugzilla.redhat.com/show_bug.cgi?id=2512367