PT-2026-28318 · Node.Js+1 · Node.Js+1

Galbarnahum · Published 2026-01-01 · Updated 2026-05-05 · CVE-2026-21714

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Node.js versions 20 through 25

Description A memory leak can occur 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 sends a GOAWAY frame, but the Http2Session object is not properly cleaned up. The WINDOW UPDATE frames are related to the HTTP/2 protocol's flow control mechanism, which manages the amount of data a sender can transmit before receiving acknowledgment from the receiver. Exceeding the maximum flow control window value can lead to resource exhaustion and potentially denial-of-service conditions.

Recommendations Update to a newer version of Node.js that contains a fix for this vulnerability.

Fix

Memory Leak

Resource Exhaustion

Weakness Enumeration

CWE-401

CWE-400

Related Identifiers

ALSA-2026:7350

ALSA-2026:7670

ALSA-2026:7675

BDU:2026-04836

BIT-NODE-2026-21714

BIT-NODE-MIN-2026-21714

CVE-2026-21714

MGASA-2026-0071

OESA-2026-1951

OESA-2026-1952

OESA-2026-1953

OESA-2026-1954

OPENSUSE-SU-2026:10504-1

OPENSUSE-SU-2026:20519-1

RHSA-2026:7350

RHSA-2026:7670

RHSA-2026:7675

SUSE-SU-2026:1299-1

SUSE-SU-2026:1363-1

SUSE-SU-2026:1371-1

SUSE-SU-2026:1478-1

SUSE-SU-2026:1509-1

SUSE-SU-2026:21181-1

Affected Products

Node.Js

Rocky Linux

References · 124

• https://nvd.nist.gov/vuln/detail/CVE-2026-21715 · Security Note
• https://osv.dev/vulnerability/OESA-2026-1951 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2026-0071.html · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-21714 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:1509-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21714 · Security Note
• https://ubuntu.com/security/CVE-2026-21714 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21713 · Security Note
• https://linux.oracle.com/errata/ELSA-2026-7670.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04836 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:1478-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-21714 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:1371-1 · Vendor Advisory
• https://errata.almalinux.org/10/ALSA-2026-7675.html · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20519-1 · Vendor Advisory