CVE-2020-27826

Published: May 28, 2021Modified: Jun 17, 2026

4.2

Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitability: 1.6 / Impact: 2.5

Source: NVD

Description

A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.

Affected (4)

Products: Redhat: Keycloak, Single Sign On

2 products

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Redhat Keycloak	Before 12.0.0

Configuration B

3 vulnerable

Vulnerable Software	Affected Versions
Redhat Single Sign On	All versions
Redhat Single Sign On	Version 7.4.4
Redhat Single Sign On	Version 7.4

Related CWEs

Execution with Unnecessary Privileges

The product performs an operation at a privilege level that is higher than the minimum level required, which creates new weaknesses or amplifies the consequences of other weaknesses.

References (2)

https://bugzilla.redhat.com/show_bug.cgi?id=1905089

Source: secalert@redhat.com

Issue TrackingVendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1905089

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingVendor Advisory

Timeline

No history available yet.