Keycloak /unmanagedAttributes Bypass Lets Admin View Sensitive Custom Attributes
CVE-2025-13881 Published on February 2, 2026

Org.keycloak.services.resources.admin: keycloak: limited administrator can retrieve sensitive user attributes via admin api
A flaw was found in Keycloak Admin API. This vulnerability allows an administrator with limited privileges to retrieve sensitive custom attributes via the /unmanagedAttributes endpoint, bypassing User Profile visibility settings.

Vendor Advisory Vendor Advisory NVD

Vulnerability Analysis

CVE-2025-13881 can be exploited with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
HIGH
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
NONE
Availability Impact:
NONE

Timeline

Reported to Red Hat.

Made public. 56 days later.

Weakness Type

Incorrect Privilege Assignment

A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.


Products Associated with CVE-2025-13881

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2025-13881 are published in Red Hat Build Keycloak:

Red Hat Build Keycloak
 

Affected Versions

Red Hat build of Keycloak 26.4: Red Hat build of Keycloak 26.4: Red Hat build of Keycloak 26.4: Red Hat build of Keycloak 26.4.9:

Exploit Probability

EPSS
0.01%
Percentile
1.18%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.