CVE-2026-22797
CVSS Score
9.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-290 |
| Vendor | openstack |
| Product | keystonemiddleware |
| Published | Jan 19, 2026 |
| Last Updated | Jun 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
OpenStack / keystonemiddleware
10.5.0 < 10.7.2 10.8.0 < 10.9.1 10.10.0 < 10.12.1
References
launchpad.net: https://launchpad.net/bugs/2129018 openwall.com: https://www.openwall.com/lists/oss-security/2026/01/16/9 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 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-22797 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2430879 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22797.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:5907 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:5133 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:4434 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3855 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3402