CVE-2026-14180

MEDIUM 5.3

Undertow-core: undertow:http request smuggling via oversized chunk-size bit overlap

CVSS Score

5.3

EPSS Score

0.4%

EPSS Percentile

35th

A flaw was found in the ChunkReader component of the Undertow HTTP server, which is used by WildFly and JBoss EAP to handle chunked transfer encoding. The issue occurs because the parser uses a single internal variable to store both the remaining chunk size and state flags. By sending a specially crafted request with an extremely large chunk size, an attacker can cause these values to overlap, tricking the parser into thinking a request has finished prematurely. This can allow a second, "smuggled" request to be processed out of sync, potentially bypassing security controls.

CWE	CWE-444
Vendor	red hat
Product	red hat jboss enterprise application platform 8.1 for rhel 10
Published	Aug 11, 2026
Last Updated	Sep 22, 2026

Stay Ahead of the Next One

Get instant alerts for red hat red hat jboss enterprise application platform 8.1 for rhel 10

Be the first to know when new medium vulnerabilities affecting red hat red hat jboss enterprise application platform 8.1 for rhel 10 are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 7

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 7

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 7

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 7

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 7

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack

All versions affected

Red Hat / Red Hat Single Sign-On 7

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

access.redhat.com: https://access.redhat.com/errata/RHSA-2026:70228 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:70229 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:70230 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:70277 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-14180 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2494771

Credits

Red Hat would like to thank Gai Tanaka for reporting this issue.