cvedb.io
CVE-2026-21714
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2026-03-30T20:16:19.573 · Last modified 2026-06-17T10:18:57.583

Summary

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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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.