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CVE-2024-4027

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

Published: Jan 30, 2026Updated: Feb 4, 2026 Sources: CVE List NVD GHSACWE-20
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.4%
Top 65.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

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

OpenShift ServerlessRed Hat
On-prem
Operating Systems / linux-distro
Red Hat build of Apache Camel 4 for Quarkus 3Red Hat
On-prem
Operating Systems / linux-distro
Red Hat build of Apache Camel for Spring Boot 3Red Hat
On-prem
Operating Systems / linux-distro
Red Hat build of Apache Camel for Spring Boot 4Red Hat
On-prem
Operating Systems / linux-distro
Red Hat build of Apache Camel - HawtIO 4Red Hat
On-prem
Operating Systems / linux-distro
red hatcommercialUSOperating Systemsaka red hat
and 16 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

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://nvd.nist.gov/vuln/detail/CVE-2024-4027
nvd.nist.gov
and 12 more references View all →

Timeline

Published
Jan 30, 2026
Last Updated
Feb 4, 2026

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