Skip to content

Keycloak Admin API allows an administrator with limited privileges to retrieve sensitive custom attributes

Low severity GitHub Reviewed Published Feb 2, 2026 to the GitHub Advisory Database • Updated Feb 13, 2026

Package

maven org.keycloak:keycloak-services (Maven)

Affected versions

>= 26.5.0, < 26.5.2
< 26.4.9

Patched versions

26.5.2
26.4.9

Description

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.

References

Published by the National Vulnerability Database Feb 2, 2026
Published to the GitHub Advisory Database Feb 2, 2026
Reviewed Feb 2, 2026
Last updated Feb 13, 2026

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(1st percentile)

Weaknesses

Incorrect Privilege Assignment

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

CVE ID

CVE-2025-13881

GHSA ID

GHSA-g78x-7vwx-9f58

Source code

Credits

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.