CVE WatchJul 23, 2026

CVE-2026-42999

An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone RBAC policy enforcer in enforce_call unconditionally merges the ra

CVSS

6.0

Medium

EPSS

0.3%

p26

KEV

—

Exploit Today

0-100

Published: May 28, 2026 · Last modified: Jul 23, 2026 · CWE-863 · CWE-639

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-08-172026-09-14

Technical 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).

Official references

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