CVE-2026-22797
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.9epss 0.6%
exploitation probability
0.6%top 56% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Affected products
OpenStack · keystonemiddlewareReferences
https://access.redhat.com/errata/RHSA-2026:3402https://access.redhat.com/errata/RHSA-2026:3855https://access.redhat.com/errata/RHSA-2026:4434https://access.redhat.com/errata/RHSA-2026:5133https://access.redhat.com/errata/RHSA-2026:5907https://access.redhat.com/security/cve/CVE-2026-22797https://bugzilla.redhat.com/show_bug.cgi?id=2430879https://launchpad.net/bugs/2129018https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22797.jsonhttps://www.openwall.com/lists/oss-security/2026/01/16/9http://www.openwall.com/lists/oss-security/2026/01/15/1http://www.openwall.com/lists/oss-security/2026/01/16/2