CVE-2026-21714

CVSS 5.3 MEDIUMEPSS 0.5%CWE-401

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Productos afectados

nodejs · node

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Referencias

https://nodejs.org/en/blog/vulnerability/march-2026-security-releases