CVE-2026-21714 Affecting nodejs package, versions <22.22.2+dfsg+~cs22.19.15-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.45% (36th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-NODEJS-15798491
  • published28 Mar 2026
  • disclosed30 Mar 2026

Introduced: 28 Mar 2026

CVE-2026-21714  (opens in a new tab)

How to fix?

Upgrade Debian:unstable nodejs to version 22.22.2+dfsg+~cs22.19.15-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs package and not the nodejs package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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 Base Scores

version 3.1