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    CVE-2026-35571

    Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, Mustache navigation templates interpolated configuration-controlled link values directly into href attributes without URL scheme validation. An administrator who could modify the navItems configuration could inject javascript: URIs, enabling stored cross-site scripting (XSS) against other authenticated users viewing the Emissary web interface. This vulnerability is fixed in 8.39.0.

    Published:Apr 7, 2026
    Last Modified:Apr 27, 2026
    EPS:Apr 7, 2026
    EPSS Score:0.00029
    CVSS Score:4.8

    Affected Products

    Vendor
    Nationalsecurityagency
    Product
    Emissary
    Vendor
    Nsa
    Product
    Emissary

    Exploits

    https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-cpm7-cfpx-3hvp

    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