CVE-2026-21714

N/A

Description

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.

CVE Details

CVSS v3.1 ScoreN/A

Published3/30/2026

Last Modified4/1/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-401

References

https://nodejs.org/en/blog/vulnerability/march-2026-security-releases(support@hackerone.com)

IOC Correlations

No correlations recorded

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