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CVE-2026-21712

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存在安全漏洞，该漏洞源于URL处理不当，当使用包含无效字符的畸形国际化域名调用url.format时，可能导致断言失败和进程崩溃。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
nodejs node 24.14.0≤ 24.14.0 affected
25.8.1≤ 25.8.1 affected
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I. Basic Information for CVE-2026-21712

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw in Node.js URL processing causes an assertion failure in native code when `url.format()` is called with a malformed internationalized domain name (IDN) containing invalid characters, crashing the Node.js process.
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存在安全漏洞，该漏洞源于URL处理不当，当使用包含无效字符的畸形国际化域名调用url.format时，可能导致断言失败和进程崩溃。
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 24.14.0 ~ 24.14.0 -

II. Public POCs for CVE-2026-21712

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III. Intelligence Information for CVE-2026-21712

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Security Blog Posts for CVE-2026-21712 (1)

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

CVE-2026-21714 Node.js 安全漏洞
CVE-2026-21717 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-2026-21712

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