Authorization Bypass Through User-Controlled Key Affecting keystone package, versions [14.0.0,29.0.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Jun 2026
- disclosed28 May 2026
- creditUnknown
Introduced: 28 May 2026
CVE-2026-42999 (opens in a new tab)How to fix?
Upgrade keystone to version 29.0.2 or higher.
Overview
keystone is a package that provides authentication, authorization and service discovery mechanisms via HTTP primarily for use by projects in the OpenStack family.
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via injection of arbitrary policy target attributes in the request body. An attacker can gain unauthorized access to other users' resources and escalate privileges by including target IDs in the request payload.