CVE-2026-28367: 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. A remote attacker can exploit this vulnerability by sending `\r\r\r` as a header block terminator. This can be used for request smuggling with certain proxy servers, such as older versions of Apache Traffic Server and Google Cloud Classic Application Load Balancer, potentially leading to unauthorized access or manipulation of web requests.

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 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.