Medium 6.6Published Aug 2, 2026

CVE-2026-18571Keycloak-services: keycloak-services: fgap v2 group assignment bypass during user creation

Updated under an hour ago (Oct 26, 2026, 9:00 PM ET)

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It affects Red Hat build of Keycloak 26.6 and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Red Hat build of Keycloak 26.6

Exploited in the last 30 days

A flaw was found in the user creation component of Keycloak when Fine-Grained Admin Permissions V2 (FGAP V2) is enabled. This issue allows a sub-administrator with permission to create users to add those users to any group, even groups the sub-administrator is not authorized to manage. This could lead to unauthorized access to sensitive information or elevated privileges for the newly created users.

CVSS: 6.6 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Modified
Record last updated: Sep 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat build of Keycloak 26.6 redhat:build_keycloak	from 26.6.7-3 not affected	CNA record
Red Hat Red Hat Data Grid 8 redhat:jboss_data_grid	8	CNA record
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack redhat:jbosseapxp	Versions not stated	CNA record
Red Hat Red Hat Single Sign-On 7 redhat:red_hat_single_sign_on	7	CNA record
redhat build_of_keycloak redhat:build_of_keycloak	all versions	NVD

References

References

https://access.redhat.com/errata/RHSA-2026:68277	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:68278	vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2026-18571	vdb-entry, x-refsource-redhat, vendor-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2509759	issue-tracking, x-refsource-redhat, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.