GitHub Advisoryadvisory · Maven

GHSA-3x3v-w654-m28m Undertow: Denial of Service via Multipart/Form-Data Parsing on HTTP GET Requests

MEDIUM Published 2026-03-24 Modified 2026-06-30 Official page ↗
Aliases
CVE-2026-3260
Ecosystem
Maven
Packages
io.undertow:undertow-core
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-770
Reviewed
2026-03-27

Affected packages

• Maven io.undertow:undertow-core: < 2.4.0.Beta1 (no fix yet)

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).

Related

Alias · not in database (1)

Weakness · CWE (1)

  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References