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.
CVE-2026-28368
CVSS base score
8.7 (v3.1)
Severity
HIGH
Attack vector
Network
Weakness
CWE-444
Last modified
November 4, 2026
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Affected products
redhat build of apache camel - hawtio
redhat build of apache camel for spring boot
redhat data grid
redhat fuse
redhat jboss enterprise application platform
redhat jboss enterprise application platform expansion pack
redhat process automation
redhat single sign-on
redhat undertow
redhat enterprise linux
References
- access.redhat.com
- access.redhat.com
- access.redhat.com Vendor Advisory
- bugzilla.redhat.com Issue Tracking, Vendor Advisory