A flaw was found in the Fine-Grained Admin Permissions (FGAP v2) feature of Keycloak, an identity and access management solution.

A flaw was found in the Fine-Grained Admin Permissions (FGAP v2) feature of Keycloak, an identity and access management solution. The issue occurs when the system checks if a delegated administrator has permission to assign a specific role to a user. Because the check does not look inside composite roles to see what other permissions they contain, an administrator with limited rights can assign a role that secretly includes full administrative control. This allows the attacker to gain complete management access over the entire realm.

CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Severity from

no source yet

Weakness

CWE-285

• www.cve.org/CVERecord?id=CVE-2026-96448
• nvd.nist.gov/vuln/detail/CVE-2026-96448
• access.redhat.com/security/cve/CVE-2026-96448
• bugzilla.redhat.com/show_bug.cgi?id=2539291