What’s Vulnerable › Vulnerabilities

CVE-2026-15945: Keycloak-services: keycloak-services: group hierarchy search discloses hidden parent groups under fgap v2

• Severity: low (CVSS 2.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-16 · updated 2026-09-16
• Weakness: CWE-639

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

• Red Hat build of Keycloak 26.4: all versions
• RedHat Data Grid: 8.0
• RedHat Jboss Enterprise Application Platform Expansion Pack: all versions
• Red Hat Single Sign-On: 7.0

References

• https://access.redhat.com/errata/RHSA-2026:68277
• https://access.redhat.com/errata/RHSA-2026:68278
• https://access.redhat.com/security/cve/CVE-2026-15945
• https://bugzilla.redhat.com/show_bug.cgi?id=2501302

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