OpenStack Keystone CVE-2026-42999
MEDIUMCVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Lifecycle Timeline
1DescriptionNVD
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).
AnalysisAI
RBAC authorization bypass in OpenStack Keystone allows any authenticated low-privilege user to inject arbitrary policy target attributes into the policy enforcement context, overwriting database-verified identity data and impersonating other users or projects. Affected deployments span Rocky (14.0.0) through all versions prior to 29.0.2, a roughly eight-year window introduced by commit 5ea59f52. …
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