GitHub Advisoryadvisory · Maven

GHSA-6h4f-pj3g-q8fq Undertow OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded

HIGH Published 2025-12-03 Modified 2026-03-30 Official page ↗
Aliases
CVE-2024-3884
Ecosystem
Maven
Packages
io.undertow:undertow-core
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-20
Reviewed
2026-01-21

Affected packages

• Maven io.undertow:undertow-core: < 2.2.39.Final → fixed in 2.2.39.Final • Maven io.undertow:undertow-core: >= 2.4.0.Alpha1, < 2.4.0.Beta1 → fixed in 2.4.0.Beta1 • Maven io.undertow:undertow-core: >= 2.3.0.Alpha1, < 2.3.21.Final → fixed in 2.3.21.Final

Description

A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.

Related

Alias · CVE (1)

  • CVE-2024-3884 A flaw was found in Undertow that can cause remote denial of service attacks. vulnerability

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References