Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4.12-1 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-17 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-17 before * |
| Red Hat / Red Hat build of Keycloak 26.4.12 | unaffected |
| Red Hat / Red Hat Build of Keycloak | affected |
| Red Hat / Red Hat Build of Keycloak | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform 8 | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack | affected |
| Red Hat / Red Hat Single Sign-On 7 | affected |
CWE
CWE-918
References
- https://access.redhat.com/errata/RHSA-2026:19596
- https://access.redhat.com/errata/RHSA-2026:19597
- https://access.redhat.com/security/cve/CVE-2026-4366
- https://bugzilla.redhat.com/show_bug.cgi?id=2448543
ADP enrichment
No English description supplied.
No references supplied.