Improper authorization in Keystone middleware - CVE-2026-22797
Published: January 19, 2026
Vulnerability identifier: #VU121642
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-22797
CWE-ID: CWE-285
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Openstack
Affected software:
Keystone middleware
Keystone middleware
Detailed vulnerability description
The vulnerability allows a remote user to escalate privileges within the application.
The vulnerability exists due to missing authorization checks in the external_oauth2_token middleware. A remote authenticated user can send forged identity headers such as X-Is-Admin-Project, X-Roles, or X-User-Id and escalate privileges within the application.
How to mitigate CVE-2026-22797
Install updates from vendor's website.