NVD Vulnerability Detail
Search Exploit, PoC
CVE-2026-42999
Summary

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).

Publication Date May 29, 2026, 4:16 a.m.
Registration Date May 30, 2026, 4:11 a.m.
Last Update June 2, 2026, 11:41 p.m.
CVSS3.1 : HIGH
スコア 8.8
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃に必要な特権レベル(PR)
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C)
完全性への影響(I)
可用性への影響(A)
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:* 14.0.0 27.0.2
cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:* 28.0.0 28.0.2
cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:* 29.0.0 29.0.2
Related information, measures and tools
Common Vulnerabilities List