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CVE-2026-21714

Quick assessment

Affected
nodejs node
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Node.js是Node.js开源的一个开源、跨平台的 JavaScript 运行时环境。 Node.js 20.x版本、22.x版本、24.x版本和25.x版本存在安全漏洞，该漏洞源于HTTP/2服务器在处理导致流量控制窗口超过最大值的WINDOW_UPDATE帧时，可能导致内存泄漏。

AI Predicted 5.3 Difficulty: Easy EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-21714

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Node.js 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Node.js是Node.js开源的一个开源、跨平台的 JavaScript 运行时环境。 Node.js 20.x版本、22.x版本、24.x版本和25.x版本存在安全漏洞，该漏洞源于HTTP/2服务器在处理导致流量控制窗口超过最大值的WINDOW_UPDATE帧时，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nodejs node 20.20.1 ~ 20.20.1 -

II. Public POCs for CVE-2026-21714

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III. Intelligence Information for CVE-2026-21714

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Security Blog Posts for CVE-2026-21714 (1)

Same Patch Batch · nodejs · 2026-03-30 · 8 CVEs total

CVE-2026-21717 Node.js 安全漏洞
CVE-2026-21712 Node.js 安全漏洞
CVE-2026-21713 Node.js 安全漏洞
CVE-2026-21710 Node.js 安全漏洞
CVE-2026-21716 Node.js 安全漏洞
CVE-2026-21715 Node.js 安全漏洞
CVE-2026-21711 Node.js 安全漏洞

IV. Related Vulnerabilities

Same product: node
Same vendor: nodejs

V. Comments for CVE-2026-21714

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