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CVE Vulnerability Details :
CVE-2026-18571
PUBLISHED
More InfoOfficial Page
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
View Known Exploited Vulnerability (KEV) details
Published At-02 Aug, 2026 | 05:18
Updated At-02 Aug, 2026 | 05:18
Rejected At-
▼CVE Numbering Authority (CNA)
Keycloak-services: keycloak-services: fgap v2 group assignment bypass during user creation

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.

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Build of Keycloak
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
keycloak-services
CPEs
  • cpe:/a:redhat:build_keycloak:
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Build of Keycloak
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhbk-keycloak-rhel9/rhbk-keycloak-rhel9
CPEs
  • cpe:/a:redhat:build_keycloak:
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Build of Keycloak
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhbk-openshift-rhel9/rhbk-openshift-rhel9
CPEs
  • cpe:/a:redhat:build_keycloak:
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Data Grid 8
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
keycloak-services
CPEs
  • cpe:/a:redhat:jboss_data_grid:8
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat JBoss Enterprise Application Platform Expansion Pack
Collection URL
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
Package Name
keycloak-services
CPEs
  • cpe:/a:redhat:jbosseapxp
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Single Sign-On 7
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
keycloak-services
CPEs
  • cpe:/a:redhat:red_hat_single_sign_on:7
Default Status
unaffected
Problem Types
TypeCWE IDDescription
CWECWE-862Missing Authorization
Type: CWE
CWE ID: CWE-862
Description: Missing Authorization
Metrics
VersionBase scoreBase severityVector
3.16.6MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 6.6
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Red Hat severity rating
value:
Moderate
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Exploits
Credits
Red Hat would like to thank robinho11842 for reporting this issue.
Timeline
EventDate
Reported to Red Hat.2026-07-30 10:29:12
Made public.2026-07-30 10:29:12
Event: Reported to Red Hat.
Date: 2026-07-30 10:29:12
Event: Made public.
Date: 2026-07-30 10:29:12
Replaced By
Rejected Reason
References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-18571
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2509759
issue-tracking
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-18571
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2509759
Resource:
issue-tracking
x_refsource_REDHAT
Details not found