CVE-2026-42999
Description
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).
How to fix
- openstack keystone27.0.2, 28.0.2, 29.0.2 or later
- keystone27.0.2, 28.0.2, 29.0.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openstack keystone | 14.0.0 ≤ v < 27.0.2, 28.0.0 ≤ v < 28.0.2, 29.0.0 ≤ v < 29.0.2 | 27.0.2, 28.0.2, 29.0.2 |
| keystonePyPI | 14.0.0 ≤ v < 27.0.2, 28.0.0 ≤ v < 28.0.2, 29.0.0 ≤ v < 29.0.2 | 27.0.2, 28.0.2, 29.0.2 |
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Attack Surface Management
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