CVE-2026-0871

EUVD-2026-9005
A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.9 MEDIUM
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
redhatbuild_of_keycloak
𝑥
< 26.4.9
redhatbuild_of_keycloak
-
redhatkeycloak
𝑥
< 26.4.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://access.redhat.com/errata/RHSA-2026:2365
https://access.redhat.com/errata/RHSA-2026:2366
https://access.redhat.com/security/cve/CVE-2026-0871
https://bugzilla.redhat.com/show_bug.cgi?id=2428881