CVE-2026-14180

MEDIUM 5.3

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

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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 build of apache camel for spring boot 4
Published	Aug 11, 2026

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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 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