PT-2026-26028 · Red Hat · Red Hat Build Of Keycloak+3

Published 2026-03-18 · Updated 2026-03-18 · CVE-2026-4366

NVD

CVSS v3.1

5.8

5.8

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

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.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-4366

Affected Products

Red Hat Build Of Keycloak

Red Hat Enterprise Application Platform 8

Red Hat Jboss Enterprise Application Platform Expansion Pack

Red Hat Single Sign-On 7

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-4366 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2448543 · Note
• https://access.redhat.com/security/cve/CVE-2026-4366 · Note