CVE-2026-15945 — MEDIUM (4.3)

Vulnerability 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.

CVSS Score

4.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Redhat	Build Of Keycloak	-
Redhat	Data Grid	8.0
Redhat	Jboss Enterprise Application Platform Expansion Pack	-
Redhat	Single Sign-On	7.0

Related Weaknesses (CWE)

CWE-639

References

https://access.redhat.com/security/cve/CVE-2026-15945Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2501302Issue TrackingVendor Advisory

FAQ

What is CVE-2026-15945?

CVE-2026-15945 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 re...

How severe is CVE-2026-15945?

CVE-2026-15945 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-15945?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Build Of Keycloak, Redhat Data Grid, Redhat Jboss Enterprise Application Platform Expansion Pack, Redhat Single Sign-On.