SEPTEMBER 21, 2026
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Case File

CVE-2026-42999

MEDIUM · CVSS 6 EPSS 0.33%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-28 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.0. It affects F5. Exploitation may require the attacker to be authenticated.

CVE
CVE-2026-42999
Severity
MEDIUM
CVSS
6
EPSS
0.33%
F5

Original NVD 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).

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