A flaw was found in Keycloak. A broken access control vulnerability in the Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access (UMA) resource, to enumerate and harvest personally identifiable information (PII) for all realm users. By sending crafted requests with arbitrary usernames or email values, the endpoint returns full profile objects for unrelated users. This leads to broad profile-level information disclosure.
References
| Link | Resource |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:19596 | Vendor Advisory |
| https://access.redhat.com/errata/RHSA-2026:19597 | Vendor Advisory |
| https://access.redhat.com/security/cve/CVE-2026-37981 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2455326 | Vendor Advisory |
Configurations
History
03 Jun 2026, 19:53
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://access.redhat.com/errata/RHSA-2026:19596 - Vendor Advisory | |
| References | () https://access.redhat.com/errata/RHSA-2026:19597 - Vendor Advisory | |
| References | () https://access.redhat.com/security/cve/CVE-2026-37981 - Vendor Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2455326 - Vendor Advisory | |
| First Time |
Redhat
Redhat build Of Keycloak |
|
| CPE | cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:* |
20 May 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
20 May 2026, 12:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
19 May 2026, 12:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-19 12:16
Updated : 2026-06-03 19:53
NVD link : CVE-2026-37981
Mitre link : CVE-2026-37981
CVE.ORG link : CVE-2026-37981
JSON object : View
Products Affected
redhat
- build_of_keycloak
CWE
CWE-1220
Insufficient Granularity of Access Control