Vulnary
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Critical· 9.9official fix available

CVE-2026-22797

An OpenStack keystonemiddleware vulnerability allows attackers to forge authentication headers and gain higher privileges or impersonate users.

publishedJan 19, 2026
last modifiedAug 3, 2026
sourcesNVD
severity · cvss
9.9
critical · how bad it is
exploitation · epss
<1%
44th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Aug 19, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

OpenStack keystonemiddleware versions 10.5‑10.7 (before 10.7.2), 10.8, 10.9 (before 10.9.1), and 10.10‑10.12 (before 10.12.1) that use the external_oauth2_token middleware.

02

Real-world impact

An attacker who can authenticate can send forged headers such as X-Is-Admin-Project, X-Roles, or X-User-Id to elevate privileges or impersonate other users, potentially accessing sensitive data or performing actions as another user.

03

Why this severity

The CVSS score of 9.9 reflects that the vulnerability is network‑reachable, requires low effort, and gives attackers high confidentiality and integrity impact, while availability impact is low.

04

What to do about it

official fix available
recommended steps
  1. 01Upgrade OpenStack keystonemiddleware to a patched release (10.7.2, 10.8, 10.9.1, or 10.12.1 or later).
  2. 02Restart the keystonemiddleware service to apply the update.

NVD description

05

Timeline

  1. Jan 19, 2026 · Jan 19, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 20, 2026 · 16d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
  3. Aug 3, 2026 · 2d ago
    Advisory updated
    The NVD record was last revised.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredLow
User interactionNone needed
ScopeChanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactLow
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →