OpenStack Keystone up to 27.0.2/28.0.2/29.0.2 Role Assignment list_role_assignments_for_tree scope.project.id information disclosure

Summaryinfo

A vulnerability marked as problematic has been reported in OpenStack Keystone up to 27.0.2/28.0.2/29.0.2. Affected is the function list_role_assignments_for_tree of the component Role Assignment. This manipulation of the argument scope.project.id causes information disclosure. This vulnerability appears as CVE-2026-80183. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in OpenStack Keystone up to 27.0.2/28.0.2/29.0.2. It has been declared as problematic. Affected by this vulnerability is the function list_role_assignments_for_tree of the component Role Assignment. The manipulation of the argument scope.project.id with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at launchpad.net. This vulnerability is known as CVE-2026-80183 since 08/25/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 27.0.3, 28.0.3 or 29.0.3 eliminates this vulnerability.

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Productinfo

Type

• Cloud Software

Vendor

• OpenStack

Name

• Keystone

Version

• 27.0.0
• 27.0.1
• 27.0.2
• 28.0.0
• 28.0.1
• 28.0.2
• 29.0.0
• 29.0.1
• 29.0.2

License

• free

Website

• Vendor: https://www.openstack.org/

CPE 2.3info

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CPE 2.2info

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