CVE-2026-22797CRITICAL 9.9EPSS p35.9%
CVE-2026-22797CVE-2026-22797
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.
Scoring
| CVSS 3.1 | 9.9 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L |
| EPSS | 0.45% probability of exploitation · percentile 35.9% · 2026-06-19T12:03:05Z |
| Published | 2026-01-19 |
| Last modified | 2026-04-15 |
Underlying weaknesses· 1
References
- https://launchpad.net/bugs/2129018
- https://www.openwall.com/lists/oss-security/2026/01/16/9
- http://www.openwall.com/lists/oss-security/2026/01/15/1
- http://www.openwall.com/lists/oss-security/2026/01/16/2
- http://www.openwall.com/lists/oss-security/2026/01/16/3
- http://www.openwall.com/lists/oss-security/2026/01/16/9
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Authentication Bypass by Spoofingcwe-290 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.