CVE-2026-28368

A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks, potentially bypassing security controls and accessing unauthorized resources.

Score

CVSS 3.1 9.1 Critical

Status

Modified - secalert@redhat.com

Published

2026-03-27

Last modified

2026-10-26

Weaknesses

CWE-444

Affected products

• Apache Camel Hawtio (Redhat)
• Build Of Apache Camel - Hawtio (Redhat)
• Build Of Apache Camel For Spring Boot (Redhat)
• Camel Spring Boot (Redhat)
• Data Grid (Redhat)
• Enterprise Linux (Redhat)
• Fuse (Redhat)
• Jboss Data Grid (Redhat)
• Jboss Enterprise Application Platform (Redhat)
• Jboss Enterprise Application Platform Expansion Pack (Redhat)
• Jboss Enterprise Bpms Platform (Redhat)
• Jboss Fuse (Redhat)
• Jbosseapxp (Redhat)
• Process Automation (Redhat)
• Red Hat Single Sign On (Redhat)
• Single Sign-on (Redhat)
• Undertow (Redhat)

References

• https://access.redhat.com/errata/RHSA-2026:25125
• https://access.redhat.com/errata/RHSA-2026:25126
• https://access.redhat.com/security/cve/CVE-2026-28368
• https://bugzilla.redhat.com/show_bug.cgi?id=2443261