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CVE-2026-56850

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.

nodejs node是nodejs组织的一个JavaScript运行环境。 nodejs node 26.5.0及之前版本、24.18.0及之前版本和22.23.1及之前版本存在授权问题漏洞，该漏洞源于HTTPS Agent连接重用导致PFX对象数组键冲突，允许在不同客户端证书配置的请求中重用mutual TLS客户端身份。

AI Predicted 7.5 Difficulty: Easy EPSS 0.08% · P0

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts

Affected Version Matrix 3

VendorProduct Version RangeStatus
nodejs node 26.5.0≤ 26.5.0 affected
24.18.0≤ 24.18.0 affected
22.23.1≤ 22.23.1 affected
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I. Basic Information for CVE-2026-56850

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with different client certificates. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
nodejs node 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
nodejs node是nodejs组织的一个JavaScript运行环境。 nodejs node 26.5.0及之前版本、24.18.0及之前版本和22.23.1及之前版本存在授权问题漏洞，该漏洞源于HTTPS Agent连接重用导致PFX对象数组键冲突，允许在不同客户端证书配置的请求中重用mutual TLS客户端身份。
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 26.5.0 ~ 26.5.0 -

II. Public POCs for CVE-2026-56850

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III. Intelligence Information for CVE-2026-56850

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Security Blog Posts for CVE-2026-56850 (1)

Same Patch Batch · nodejs · 2026-07-30 · 4 CVEs total

CVE-2026-58043 nodejs node 权限许可和访问控制问题漏洞
CVE-2026-58040 nodejs node 安全漏洞
CVE-2026-56847 nodejs node 处理逻辑错误漏洞

IV. Related Vulnerabilities

Same product: node
Same vendor: nodejs
Same weakness: CWE-287

V. Comments for CVE-2026-56850

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