CVE-2026-21714

Name
CVE-2026-21714
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

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

Match rules

CPE URI Source package Min version Max version

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
nodejs edge-main 24.14.1-r0 Jakub Jirutka <jakub@jirutka.cz> fixed
nodejs 3.23-main 24.14.1-r0 Jakub Jirutka <jakub@jirutka.cz> fixed
nodejs 3.22-main 22.22.2-r0 Jakub Jirutka <jakub@jirutka.cz> fixed
nodejs 3.21-main 22.22.2-r0 Jakub Jirutka <jakub@jirutka.cz> fixed