CVE-2026-22797An 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.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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
- 9.9 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
- Weakness (CWE)
- CWE-290
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Sep 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
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
- https://access.redhat.com/errata/RHSA-2026:3402
- https://access.redhat.com/errata/RHSA-2026:3855
- https://access.redhat.com/errata/RHSA-2026:4434
- https://access.redhat.com/errata/RHSA-2026:5133
- https://access.redhat.com/errata/RHSA-2026:5907
- https://access.redhat.com/security/cve/CVE-2026-22797
- https://bugzilla.redhat.com/show_bug.cgi?id=2430879
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22797.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.