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Vulnerability record · CVE-2026-3911 · published 11 March 2026

CVE-2026-3911: Redhat build of keycloak vulnerability

Redhat · Build Of Keycloak

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.

2.7 CVSS 3.1 Low EPSS 0.41% · top 66.9% CWE-359 · CWE-359
2.7CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:6477 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6478 Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-3911 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2446392 Issue Tracking

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-3911), CISA KEV, FIRST EPSS (scores of 2026-10-09). This page is refreshed as NVD updates the record.