Denial-of-Service Vulnerability in Undertow by Red Hat
CVE-2024-4027

7.5HIGH

Key Information:

Vendor: Red Hat
Status: Openshift Serverless; Red Hat Build Of Apache Camel 4 For Quarkus 3; Red Hat Build Of Apache Camel For Spring Boot 3; Red Hat Build Of Apache Camel For Spring Boot 4
Vendor: CVE Published:; 30 January 2026

What is CVE-2024-4027?

An identified flaw in Undertow allows servlets that utilize the HttpServletRequestImpl.getParameterNames() method to experience an OutOfMemoryError when processing large parameter names sent by clients. This vulnerability enables unauthorized users to initiate a remote denial-of-service (DoS) attack, potentially disrupting service availability.

References

https://access.redhat.com/security/cve/CVE-2024-4027

vdb-entryx_refsource_REDHAT

https://bugzilla.redhat.com/show_bug.cgi?id=2276410

issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:

7.5

Severity:

HIGH

Confidentiality:

None

Integrity:

None

Availability:

None

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

None

Scope:

Unchanged

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Jan 30, 2026
Vulnerability Reserved
Apr 22, 2024

CVE-2024-4027 Data

JSON