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    CVE-2026-22674

    Hashgraph Guardian through 3.6.0, fixed in commit ba8c566, contains a stored cross-site scripting vulnerability that allows authenticated users with the STANDARD_REGISTRY role to inject malicious scripts by submitting a crafted companyName value via the branding configuration API endpoint. Attackers can exploit the unsanitized innerHTML assignment in the branding service to execute arbitrary JavaScript in the browser of every authenticated user on every page load.

    Published:Jun 18, 2026
    Last Modified:Jul 14, 2026
    EPS:Jun 18, 2026
    EPSS Score:0.00177
    CVSS Score:4.8

    Affected Products

    Vendor
    Hashgraph
    Product
    Guardian
    Vendor
    Hedera
    Product
    Guardian

    Exploits

    No exploit reference

    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