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CVE Vulnerability Details :
CVE-2026-37978
PUBLISHED
More InfoOfficial Page
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
View Known Exploited Vulnerability (KEV) details
Published At-19 May, 2026 | 10:52
Updated At-19 May, 2026 | 12:23
Rejected At-
▼CVE Numbering Authority (CNA)
Keycloak: org.keycloak.services: keycloak: information disclosure via evaluate-scopes admin api

A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID (userId) parameter. This vulnerability allows for cross-role personally identifiable information (PII) leakage, enabling unauthorized visibility into user identities and authorizations across the realm. Exploitation is possible remotely via network access to the Admin API.

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Build of Keycloak
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhbk/keycloak-rhel9
CPEs
  • cpe:/a:redhat:build_keycloak:
Default Status
affected
Problem Types
TypeCWE IDDescription
CWECWE-639Authorization Bypass Through User-Controlled Key
Type: CWE
CWE ID: CWE-639
Description: Authorization Bypass Through User-Controlled Key
Metrics
VersionBase scoreBase severityVector
3.14.9MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Version: 3.1
Base score: 4.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Metrics Other Info
Red Hat severity rating
value:
Moderate
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

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.

Exploits

Credits

Timeline
EventDate
Reported to Red Hat.2026-04-06 07:56:31
Made public.2026-05-19 10:43:47
Event: Reported to Red Hat.
Date: 2026-04-06 07:56:31
Event: Made public.
Date: 2026-05-19 10:43:47
Replaced By

Rejected Reason

References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-37978
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2455327
issue-tracking
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-37978
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2455327
Resource:
issue-tracking
x_refsource_REDHAT
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Details not found