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CVE-2026-22797
DEB
Critical

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.…

CVSS
9.9
Critical
EPSS
0.00
p35
Published
2026-01-01
Updated
2026-01-01
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.

Tags · CWE
CWE-290
CAPEC-21
CAPEC-22
CAPEC-59
CAPEC-60
CAPEC-94
CAPEC-459
CAPEC-461
CAPEC-473
CAPEC-476
CAPEC-667
Affected products
Python-keystonemiddlewarePython-keystonemiddlewarePython-keystonemiddlewarePython-keystonemiddlewarePython-keystonemiddlewarePython-keystonemiddleware
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Timeline
2026-01-01
Published
2026-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: L
Low (L)
User Interaction
UI: N
None (N)
Scope
S: C
Changed (C)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: L
Low (L)
Exploit indicators
EPSS
0.005 · p35
Known exploited (KEV)
No
MITRE ATT&CK
Inferred via CAPEC
└ via CAPEC-473 · CWE-290
└ via CAPEC-21 · CWE-290
└ via CAPEC-60 · CWE-290
└ via CAPEC-21 · CWE-290
└ via CAPEC-21 · CWE-290
└ via CAPEC-60 · CWE-290
└ via CAPEC-473 · CWE-290
└ via CAPEC-94 · CWE-290
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected products
ProductVendorStatus
python-keystonemiddlewareTracked
python-keystonemiddlewareTracked
python-keystonemiddlewareTracked
python-keystonemiddlewareTracked
python-keystonemiddlewareTracked
python-keystonemiddlewareTracked