CVE-2026-3911

Org.keycloak.services.resources.admin.userresource: keycloak: information disclosure of disabled user attributes via administrative endpoint

Published Mar 11, 2026 CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed
Description
A flaw was found in Keycloak. An authenticated user with the view-users role could exploit a vulnerability in the UserResource component. By accessing a specific administrative endpoint, this user could improperly retrieve user attributes that were configured to be hidden. This unauthorized information disclosure could expose sensitive user data.

Remediation

Vendor Workaround

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.

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Github GHSA Github GHSA GHSA-xh32-c9wx-phrp Keycloak: Information disclosure of disabled user attributes via administrative endpoint
History
Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:26.4.11:*:*:*:*:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:*:*:*:*
Type Values Removed Values Added
CPEs cpe:/a:redhat:build_keycloak: cpe:/a:redhat:build_keycloak:26.4::el9
References
Type Values Removed Values Added
First Time appeared Redhat build Of Keycloak
Vendors & Products Redhat build Of Keycloak
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A flaw was found in Keycloak. An authenticated user with the view-users role could exploit a vulnerability in the UserResource component. By accessing a specific administrative endpoint, this user could improperly retrieve user attributes that were configured to be hidden. This unauthorized information disclosure could expose sensitive user data.
Title Org.keycloak.services.resources.admin.userresource: keycloak: information disclosure of disabled user attributes via administrative endpoint
First Time appeared Redhat
Redhat build Keycloak
Weaknesses CWE-359
CPEs cpe:/a:redhat:build_keycloak:
Vendors & Products Redhat
Redhat build Keycloak
References
Metrics cvssV3_1

{'score': 2.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Apr 2, 2026, 4:47 PM
Reserved
Mar 11, 2026, 3:32 AM
Status
Analyzed
Published
Mar 11, 2026, 6:17 AM
Modified
Jun 17, 2026, 10:44 AM
Severity
Low
Public date
Mar 11, 2026, 3:30 AM