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    CVE-2026-56850

    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**.

    Published:Jul 30, 2026
    Last Modified:Aug 25, 2026
    EPS:Jul 30, 2026
    EPSS Score:0.00085
    CVSS Score:4.4

    Affected Products

    Vendor
    Nodejs
    Product
    Node.js
    Vendor
    Nodejs
    Product
    Nodejs
    Vendor
    Redhat
    Product
    Hummingbird

    Exploits

    No exploit reference

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High