CVE-2026-3260 in Undertow

Summary

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending an HTTP GET request containing multipart/form-data content. If the underlying application processes parameters using methods like `getParameterMap()`, the server prematurely parses and stores this content to disk. This could lead to resource exhaustion, potentially resulting in a Denial of Service (DoS).

Responsible

redhat

Reservation

02/26/2026

Disclosure

03/24/2026

Entries

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerability	CWE	Exp	Cou	CVE
352668	Undertow getParameterMap allocation of resources	770	Not defined	Not defined	CVE-2026-3260