Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected products
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:30049
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:30050
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:30083
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:30084
- VENDOR_ADVISORYhttps://access.redhat.com/security/cve/CVE-2026-9795
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=2482462
Updated 8m ago · 8 sources