CVE-2026-3911 Details
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.
A vulnerability exists in Keycloak's UserResource component, allowing an authenticated user with the view-users role to access a specific administrative endpoint and retrieve user attributes that are meant to be hidden. This flaw leads to unauthorized disclosure of sensitive user information, as it violates the privacy settings intended to keep these attributes concealed from both users and administrators.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2026:6477 | [email protected] | Vendor Advisory |
| https://access.redhat.com/errata/RHSA-2026:6478 | [email protected] | Vendor Advisory |
| https://access.redhat.com/security/cve/CVE-2026-3911 | [email protected] | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2446392 | [email protected] | Issue Tracking |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
| CWE-359 | Exposure of Private Personal Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| redhat build of keycloak | 26.4 26.4.11 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 7, 2026 | Initial Analysis | [email protected] |
| Apr 2, 2026 | CVE Modified | [email protected] |
| Mar 11, 2026 | New CVE Received | [email protected] |