DEBIAN-CVE-2026-21714

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2026-21714
Downstream
DSA-6183-1
Published: 30 Mar 2026, 20:16
Last modified:15 Jun 2026, 19:06

Vulnerability Summary

Overall Risk (default)
low
21/100
CVSS Score
5.3 MEDIUM
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

30 Mar 2026, 20:16
Published
Vulnerability first disclosed
15 Jun 2026, 19:06
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Systems

  • debian•nodejs

    all | all | all | all | < 12.22.12~dfsg-1~deb11u8 | < 18.20.4+dfsg-1~deb12u2 | < 20.19.2+dfsg-1+deb13u2 | < 22.22.2+dfsg+~cs22.19.15-1

References (1)