CVE-2026-22797
CRITICAL9.9EPSS 0.17%python-keystonemiddleware - security update
Published: 1/19/2026Modified: 4/28/2026
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.
Affected packages (2)
- Debian/python-keystonemiddlewarefrom 0, < 10.9.0-2+deb13u1
- Debian/python-keystonemiddlewarefrom 0, < 10.9.0-2+deb13u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L |