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CVE-2024-4027

Undertow: outofmemoryerror in httpservletrequestimpl.getparameternames() can cause remote dos attacks

Published: Jan 30, 2026Updated: Aug 5, 2026 Sources: CVE List NVD GHSACWE-20
7.5HIGH
NVD MITRE
EPSS Score
0.6%
Top 55.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

A flaw was found in Undertow. Servlets using a method that calls HttpServletRequestImpl.getParameterNames() can cause an OutOfMemoryError when the client sends a request with large parameter names. This issue can be exploited by an unauthorized user to cause a remote denial-of-service (DoS) attack.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-20

Affected Products

Red Hat
commercial·US
OpenShift ServerlessMixedSaaS Service
Cloud & SaaS / container-orchestration
Red Hat build of Apache Camel 4 for Quarkus 3LibraryLibrary
OSS Libraries / generic-library
Red Hat build of Apache Camel for Spring Boot 3LibraryLibrary
OSS Libraries / generic-library
Red Hat build of Apache Camel for Spring Boot 4LibraryLibrary
OSS Libraries / generic-library
Red Hat build of Apache Camel - HawtIO 4LibraryLibrary
OSS Libraries / generic-library
Red Hat build of Apicurio Registry 2LibraryLibrary
OSS Libraries / generic-library
Red Hat Build of Keycloak
Web & CMS Plugins
Red Hat build of OptaPlanner 8On-premDev Tool
DevTools & CI / build-test-tools
Maven
package-ecosystem
io.undertow:undertow-core
OSS Libraries
and 12 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://access.redhat.com/security/cve/CVE-2024-4027
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2276410
bugzilla.redhat.com
https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-4027.json
security.access.redhat.com
and 13 more references View all →

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