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CVE-2026-28368

Undertow: undertow: request smuggling via inconsistent header parsing

Published: Mar 27, 2026Updated: Jun 10, 2026 Sources: CVE List NVDCWE-444
NVD MITRE
8.7CVSSHIGH
EPSS Score
0.7%
Top 51.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-444

Affected Products

build of apache camel - hawtioredhat
On-prem
Operating Systems / linux-distro
build of apache camel for spring bootredhat
On-prem
Operating Systems / linux-distro
data gridredhat
On-prem
Enterprise Software
fuseredhat
On-premDev Tool
DevTools & CI
jboss enterprise application platformredhat
On-premOS
Operating Systems / linux-distro
redhatcommercialUSOperating Systemsaka red hat
and 20 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:25125
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:25126
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-28368
access.redhat.com
and 1 more references View all →

Timeline

Published
Mar 27, 2026
Last Updated
Jun 10, 2026

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