CVE-2026-3260

MEDIUM

Undertow: undertow: denial of service due to premature multipart/form-data parsing in get requests

Title source: cna

Description

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending an HTTP GET request containing multipart/form-data content. If the underlying application processes parameters using methods like `getParameterMap()`, the server prematurely parses and stores this content to disk. This could lead to resource exhaustion, potentially resulting in a Denial of Service (DoS).

References (2)

Core 2

Core References

Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2026-3260

Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat

RHBZ#2443010

https://bugzilla.redhat.com/show_bug.cgi?id=2443010

Scores

CVSS v3 5.9

EPSS 0.0044

EPSS Percentile 34.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-770

Status published

Products (26)

io.undertow/undertow-core 0 - 2.4.0.Beta1Maven

Red Hat/Red Hat build of Apache Camel - HawtIO 4

Red Hat/Red Hat build of Apache Camel for Spring Boot 4

Red Hat/Red Hat Data Grid 8

Red Hat/Red Hat Enterprise Linux 10

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

Red Hat/Red Hat Fuse 7

Red Hat/Red Hat JBoss Enterprise Application Platform 7

Red Hat/Red Hat JBoss Enterprise Application Platform 8

... and 16 more

Published Mar 24, 2026

Tracked Since Mar 24, 2026