CVE-2026-22797

keystonemiddleware: From CVEorg collector

Published Jan 19, 2026 CVSS 3.1 · 9.9 Critical EPSS < 1% KEV · Not listed
Description
An issue was discovered in OpenStack keystonemiddleware 10.5 through 10.7 before 10.7.2, 10.8 and 10.9 before 10.9.1, and 10.10 through 10.12 before 10.12.1. The external_oauth2_token middleware fails to sanitize incoming authentication headers before processing OAuth 2.0 tokens. By sending forged identity headers such as X-Is-Admin-Project, X-Roles, or X-User-Id, an authenticated attacker may escalate privileges or impersonate other users. All deployments using the external_oauth2_token middleware are affected.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6104-1 python-keystonemiddleware security update
Ubuntu USN Ubuntu USN USN-8008-1 Keystone Middleware vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title keystonemiddleware: From CVEorg collector
References
Metrics threat_severity

None

threat_severity

Critical

Type Values Removed Values Added
First Time appeared Openstack
Openstack keystonemiddleware
Weaknesses CWE-290
CPEs cpe:2.3:a:openstack:keystonemiddleware:*:*:*:*:*:*:*:*
Vendors & Products Openstack
Openstack keystonemiddleware
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L'}

Type Values Removed Values Added
Description An issue was discovered in OpenStack keystonemiddleware 10.5 through 10.7 before 10.7.2, 10.8 and 10.9 before 10.9.1, and 10.10 through 10.12 before 10.12.1. The external_oauth2_token middleware fails to sanitize incoming authentication headers before processing OAuth 2.0 tokens. By sending forged identity headers such as X-Is-Admin-Project, X-Roles, or X-User-Id, an authenticated attacker may escalate privileges or impersonate other users. All deployments using the external_oauth2_token middleware are affected.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 10, 2026, 12:05 PM
Reserved
Jan 9, 2026, 12:00 AM
Status
Deferred
Published
Jan 19, 2026, 6:16 PM
Modified
Sep 10, 2026, 1:17 PM
Severity
Critical
Public date
Jan 19, 2026, 12:00 AM