CVE-2026-22797

CRITICAL EPSS 36.1%
Published Jan 19, 20265mo ago · Modified Jun 17, 20261w ago
9.9 CVSS 3.1
Critical
Find Similar
Published Jan 19, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
9.9
Exploitability
3.1
Impact
6.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability Low

Threat Intelligence

EPSS Exploit Probability
36.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-290

References 6

  • openwall.com http://www.openwall.com/lists/oss-security/2026/01/15/1
  • openwall.com http://www.openwall.com/lists/oss-security/2026/01/16/2
  • openwall.com http://www.openwall.com/lists/oss-security/2026/01/16/3
  • openwall.com http://www.openwall.com/lists/oss-security/2026/01/16/9
  • launchpad.net https://launchpad.net/bugs/2129018
  • openwall.com https://www.openwall.com/lists/oss-security/2026/01/16/9

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.