Bug 2482840 (CVE-2026-42999) - CVE-2026-42999 openstack-keystone: OpenStack Keystone: Unauthorized access and privilege escalation via arbitrary policy attribute injection
Summary: CVE-2026-42999 openstack-keystone: OpenStack Keystone: Unauthorized access an...
Keywords:
Status: NEW
Alias: CVE-2026-42999
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-28 19:02 UTC by OSIDB Bzimport
Modified: 2026-06-03 22:55 UTC (History)
7 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-28 19:02:16 UTC
An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone RBAC policy enforcer in enforce_call unconditionally merges the raw JSON request body into the policy enforcement dictionary via policy_dict.update(json_input.copy()), overwriting trusted target data that was previously set from database lookups. Because flask.request.get_json is called with force=True, this works regardless of Content-Type or HTTP method. Any authenticated user can inject arbitrary policy target attributes (e.g., user_id, project_id) into the request body to bypass RBAC checks and perform unauthorized operations on resources belonging to other users or projects. This was introduced in commit 5ea59f52 (Rocky/14.0.0).


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