Veille CVE
CVE-2026-42999
8.8 ÉlevéeDescription
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).
Produits concernés
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 3.1 | 6.0 Moyenne | cve@mitre.org | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L |
| 3.1 | 8.8 Élevée | nvd@nist.gov (NVD) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 8.3 Élevée | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
Faiblesses (CWE)
Références
- https://bugs.launchpad.net/keystone/+bug/2148398 ExploitIssue TrackingPatchThird Party Advisory
- https://security.openstack.org/ossa/OSSA-2026-015.html PatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-42999
- https://bugzilla.redhat.com/show_bug.cgi?id=2482840
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42999.json