Authentication Bypass in keycloak

GHSA-m9cj-v55f-8x26 · CVE-2020-27826

Published Mar 18, 2022 · Modified Nov 8, 2023

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.

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2020-27826
WEB https://github.com/keycloak/keycloak/commit/dae4a3eaf26590b8d441b8e4bec3b700ee303b72
WEB https://access.redhat.com/security/cve/cve-2020-27826
WEB https://bugzilla.redhat.com/show_bug.cgi?id=1905089

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