CVE-2026-21714
Detail
Awaiting Enrichment
This CVE record has been marked for NVD enrichment efforts.
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.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Base
Score:
NVD assessment
not yet provided.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0 Severity and Vector Strings:
Base
Score:
NVD assessment
not yet provided.
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Weakness Enumeration
| CWE-ID |
CWE Name |
Source |
|
CWE-401
|
Missing Release of Memory after Effective Lifetime |
CISA-ADP
|
Change History
4 change records found show changes
CVE Modified by CISA-ADP
6/17/2026 6:18:57 AM
| Action |
Type |
Old Value |
New Value |
| Added |
SSVC |
{"timestamp":"2026-03-31T16:14:45.777607Z","id":"CVE-2026-21714","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}
|
CVE Modified by HackerOne
6/17/2026 6:18:57 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Affected |
[{"vendor":"nodejs","product":"node","defaultStatus":"unaffected","versions":[{"version":"20.20.1","lessThanOrEqual":"20.20.1","versionType":"semver","status":"affected"},{"version":"22.22.1","lessThanOrEqual":"22.22.1","versionType":"semver","status":"affected"},{"version":"24.14.0","lessThanOrEqual":"24.14.0","versionType":"semver","status":"affected"},{"version":"25.8.1","lessThanOrEqual":"25.8.1","versionType":"semver","status":"affected"}]}]
|
CVE Modified by CISA-ADP
3/31/2026 2:16:45 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CWE |
CWE-401
|
New CVE Received from HackerOne
3/30/2026 4:16:19 PM
| Action |
Type |
Old Value |
New Value |
| Added |
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.
|
| Added |
CVSS V3 |
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
|
| Added |
Reference |
https://nodejs.org/en/blog/vulnerability/march-2026-security-releases
|
Quick Info
CVE Dictionary Entry: CVE-2026-21714 NVD
Published Date: 03/30/2026 NVD
Last Modified: 06/17/2026
Source: HackerOne
|
