CVE-2026-4366

medium Red Hat
CVSS v3 Base Score
5.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Published: March 18, 2026 (57 days ago)
Last Modified: March 18, 2026
Vendor: Red Hat
Source: REDHAT

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.

CWE

CWE-918

Affected Products

Red Hat Build of KeycloakRed Hat JBoss Enterprise Application Platform 8Red Hat JBoss Enterprise Application Platform Expansion PackRed Hat Single Sign-On 7

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov