In OpenStack Keystone before 29.0.3, any authenticated user holding role:reader on any project can list every project-scoped role assignment under any domain by passing a domain ID as scope.project.id with include_subtree to the GET /v3/role_assignments endpoint. The domain's project record has domain_id=null, causing the policy domain_id check to pass for any caller. With include_names, the response discloses the names and home-domain IDs of every user, group, project, and role involved. The literal "default" domain ID works against any deployment created with keystone-manage bootstrap. An attacker can harvest domain IDs from the response and repeat the query to map role assignments across the entire cloud. This is caused by misuse of "None" in  list_role_assignments_for_tree.
References
History

Thu, 27 Aug 2026 00:30:00 +0000

Type Values Removed Values Added
Description In OpenStack Keystone before 29.0.3, any authenticated user holding role:reader on any project can list every project-scoped role assignment under any domain by passing a domain ID as scope.project.id with include_subtree to the GET /v3/role_assignments endpoint. The domain's project record has domain_id=null, causing the policy domain_id check to pass for any caller. With include_names, the response discloses the names and home-domain IDs of every user, group, project, and role involved. The literal "default" domain ID works against any deployment created with keystone-manage bootstrap. An attacker can harvest domain IDs from the response and repeat the query to map role assignments across the entire cloud. This is caused by misuse of "None" in  list_role_assignments_for_tree.
First Time appeared Openstack
Openstack keystone
Weaknesses CWE-843
CPEs cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*
Vendors & Products Openstack
Openstack keystone
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-26T23:16:43.059Z

Reserved: 2026-08-25T21:24:11.765Z

Link: CVE-2026-80183

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-27T01:18:16.050

Modified: 2026-08-27T01:18:16.050

Link: CVE-2026-80183

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-27T02:00:14Z