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CVE-2026-4366

MEDIUM CVSS: 5.8 Published: 2026-03-18 Modified: 2026-06-17

Description

A flaw was identified in Keycloak, an identity and access management solution, where it improperly follows HTTP redirects when processing certain client configuration requests. This behavior allows an attacker to trick the server into making unintended requests to internal or restricted resources. As a result, sensitive internal services such as cloud metadata endpoints could be accessed. This issue may lead to information disclosure and enable attackers to map internal network infrastructure.

Affected Platforms

Redhat Build Of KeycloakRedhat Jboss Enterprise Application Platform Expansion PackRedhat Jboss Enterprise Application PlatformRedhat Single Sign-On

Weakness Type

CWE-918

References