CVE-2024-4027 HIGH

CVE-2024-4027: Undertow: outofmemoryerror in httpservletrequestimpl.getparameternames() can cause remote dos attacks

Vendor Red Hat
Product OpenShift Serverless
Weakness CWE-20 · Input validation
Published January 30, 2026
Last update June 30, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 30, 2026 CVE published
June 30, 2026 Record updated