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CVE-2026-3260

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

Published: Mar 24, 2026Updated: Apr 8, 2026 Sources: CVE List NVDCWE-770
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
0.4%
Top 65.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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).

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-770

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 17 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
Impact
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-3260
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2443010
bugzilla.redhat.com

Timeline

Published
Mar 24, 2026
Last Updated
Apr 8, 2026

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