CVE-2026-28368
Undertow: undertow: request smuggling via inconsistent header parsing
CVSS Score
8.7
EPSS Score
0.7%
EPSS Percentile
49th
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.
| CWE | CWE-444 |
| Vendor | red hat |
| Product | red hat jboss enterprise application platform 8.1 |
| Published | Mar 27, 2026 |
| Last Updated | Jun 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Red Hat / Red Hat JBoss Enterprise Application Platform 8.1
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
All versions affected Red Hat / Red Hat build of Apache Camel for Spring Boot 4
All versions affected Red Hat / Red Hat build of Apache Camel - HawtIO 4
All versions affected Red Hat / Red Hat Data Grid 8
All versions affected Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Fuse 7
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 7
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack
All versions affected Red Hat / Red Hat Process Automation 7
All versions affected Red Hat / Red Hat Single Sign-On 7
All versions affected