4.3

CVE-2026-37981

Keycloak: org.keycloak.authorization: keycloak: information disclosure via broken access control in user lookup endpoint

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Redhat ≫ Build Of Keycloak Version >= 26.4 < 26.4.12
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.37% 0.286
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
secalert@redhat.com 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE-1220 Insufficient Granularity of Access Control

The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets.

https://access.redhat.com/security/cve/CVE-2026-37981
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2455326
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19597
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19596
Vendor Advisory