CVE search · CVE-2026-21714
CVE-2026-21714
medium 5.3
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.
Details
- Status
- Analyzed
- Published
- Last changed
- Source
- support@hackerone.com
- Weakness
- CWE-401
Severity
| Version | Score | Vector | Source |
|---|---|---|---|
| CVSS 3.0 | medium 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
support@hackerone.comSecondary |
Affected products
Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.
- nodejs · node.js