VDB
DEBIAN-CVE-2026-21714
DEBIAN-CVE-2026-21714
PUBLISHED
CVSS 5.300000190734863 MEDIUM
Record from OSV · Published March 30, 2026
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| nodejs | Debian:13 | 20.19.2+dfsg-1+deb13u2 |
| nodejs | Debian:12 | 18.20.4+dfsg-1~deb12u2 |
| nodejs | Debian:14 | 22.22.2+dfsg+~cs22.19.15-1 |
Risk scores
CVSS 3.0
5.300000190734863
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | nodejs | 0, 20.19.2+dfsg-1, 20.19.2+dfsg-1+deb13u1 |
| Debian:12 | nodejs | 0, 18.13.0+dfsg1-1, 18.13.0+dfsg1-1.1 |
| Debian:14 | nodejs | 0, 22.22.1+dfsg+~cs22.19.15-1, 20.19.2+dfsg-1 |
Timeline
- Mar 30, 2026 CVE Published
- Oct 1, 2026 CVE Updated
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