CVE-2026-0871

A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*

History

17 Jun 2026, 10:11

Type Values Removed Values Added
Summary
  • (es) Se encontró una vulnerabilidad en Keycloak. Un administrador con permiso 'manage-users' puede eludir la configuración 'Solo los administradores pueden ver' para atributos no gestionados, permitiéndoles modificar estos atributos. Este control de acceso inadecuado puede llevar a cambios no autorizados en los perfiles de usuario, incluso cuando el sistema está configurado para restringir dichas modificaciones.

05 Mar 2026, 02:03

Type Values Removed Values Added
CPE cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*
References () https://access.redhat.com/errata/RHSA-2026:2365 - () https://access.redhat.com/errata/RHSA-2026:2365 - Vendor Advisory
References () https://access.redhat.com/errata/RHSA-2026:2366 - () https://access.redhat.com/errata/RHSA-2026:2366 - Vendor Advisory
References () https://access.redhat.com/security/cve/CVE-2026-0871 - () https://access.redhat.com/security/cve/CVE-2026-0871 - Vendor Advisory
References () https://bugzilla.redhat.com/show_bug.cgi?id=2428881 - () https://bugzilla.redhat.com/show_bug.cgi?id=2428881 - Issue Tracking, Vendor Advisory
First Time Redhat
Redhat keycloak
Redhat build Of Keycloak
CWE NVD-CWE-noinfo

27 Feb 2026, 08:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-02-27 08:17

Updated : 2026-06-17 10:11


NVD link : CVE-2026-0871

Mitre link : CVE-2026-0871

CVE.ORG link : CVE-2026-0871


JSON object : View

Products Affected

redhat

  • build_of_keycloak
  • keycloak
CWE
CWE-266

Incorrect Privilege Assignment

NVD-CWE-noinfo