CVE-2026-21714

NONE EPSS 36.1%
Published Mar 30, 20263mo ago · Modified Jun 17, 20262w ago
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Published Mar 30, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

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.

Threat Intelligence

EPSS Exploit Probability
36.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-401

References 1

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.