CVE-2026-28369: Red Hat Build Of Apache Camel - Hawtio

Critical severity, CVSS 9.1. EPSS: 0.9% chance of exploitation in the next 30 days.

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform request smuggling. Request smuggling allows an attacker to bypass security mechanisms, access restricted information, or manipulate web caches, potentially leading to unauthorized actions or data exposure.

Affected products

• Red Hat Build Of Apache Camel - Hawtio: version 4.0 only
• Red Hat Build Of Apache Camel For Spring Boot: version 4.0 only
• Red Hat Data Grid: version 8.0 only
• Red Hat Enterprise Linux: version 9.0 only
• Red Hat Fuse: version 7.0.0 only
• Red Hat JBoss Enterprise Application Platform: version 7.0.0 only; version 8.0.0 only
• Red Hat JBoss Enterprise Application Platform Expansion Pack: affected versions not specified
• Red Hat Process Automation: version 7.0 only
• Red Hat Single Sign-On: version 7.0 only
• Red Hat Undertow: affected versions not specified

Published 2026-03-27. Last modified 2026-09-21.