CVE-2026-21714 in Node.js

Sumário (Inglês)

A memory leak occurs in Node.js HTTP/2 servers when a client sends WINDOW_UPDATE frames on stream 0 (connection-level) that cause the flow control window to exceed the maximum value of 2³¹-1. The server correctly sends a GOAWAY frame, but the Http2Session object is never cleaned up.

This vulnerability affects HTTP2 users on Node.js 20, 22, 24 and 25.

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Divulgação

30/03/2026

Estado

Confirmado

Inscrições

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerabilidade	CWE	Exp	Con	CVE
354147	Node.js HTTP/2 Server Negação de Serviço	400	Não definido	Correção oficial	CVE-2026-21714

Fontes

• MITRE
• NVD
• CVE Details