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    CVE-2026-34752

    Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with __proto__: as a header name crashes the Haraka worker process. This issue has been patched in version 3.1.4.

    Published:Apr 2, 2026
    Last Modified:Apr 7, 2026
    EPS:Apr 2, 2026
    EPSS Score:0.0004
    CVSS Score:7.5

    Affected Products

    Vendor
    Haraka
    Product
    Haraka
    Vendor
    Haraka Project
    Product
    Haraka

    Exploits

    https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3

    Common Weakness Enumeration

    CWE-248 Uncaught Exception

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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