Description
A flaw was found in the group search functionality of the Keycloak server's administrative API. When Fine-Grained Admin Permissions (FGAP) v2 is enabled, a delegated administrator can bypass access restrictions to view parent groups they are not authorized to see. By searching for a child group they have permission to view, the system incorrectly returns the full details of the parent group in the response, leading to the disclosure of sensitive group attributes and configuration.
Affected products
redhat: build of keycloak; redhat: data grid; redhat: jboss enterprise application platform expansion pack; redhat: single sign-on
References4
- access.redhat.com/security/cve/CVE-2026-15945 Vendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2501302 Issue TrackingVendor Advisory
- access.redhat.com/errata/RHSA-2026:68277
- access.redhat.com/errata/RHSA-2026:68278
Metrics
- CVSS 3.1
-
2.7
LOW
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 29 · as of 15 November 2026
- CWE
- CWE-639
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.