CVE-2026-9795
Keycloak: keycloak: privilege escalation via improper scope mapping enforcement
CVSS Score
7.3
EPSS Score
0.0%
EPSS Percentile
0th
A flaw was found in Keycloak's Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client management permissions can exploit this vulnerability to assign any realm role, including highly privileged roles, to a client's scope mapping. This bypasses intended security controls, allowing the injected role to be projected into a user's authentication token when they access the modified client. This could lead to unauthorized privilege escalation within the Keycloak realm.
| CWE | CWE-266 |
| Vendor | red hat |
| Product | red hat build of keycloak 26.4 |
| Published | May 28, 2026 |
| Last Updated | Jul 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Red Hat / Red Hat build of Keycloak 26.4
All versions affected Red Hat / Red Hat build of Keycloak 26.4
All versions affected Red Hat / Red Hat build of Keycloak 26.4
All versions affected Red Hat / Red Hat build of Keycloak 26.4.13
All versions affected Red Hat / Red Hat build of Keycloak 26.6
All versions affected Red Hat / Red Hat build of Keycloak 26.6
All versions affected Red Hat / Red Hat build of Keycloak 26.6
All versions affected Red Hat / Red Hat build of Keycloak 26.6.4
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:30049 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:30050 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:30083 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:30084 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-9795 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2482462 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9795.json
Credits
Red Hat would like to thank Andrej Tomci for reporting this issue.