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    CVE-2026-37503

    Cross-Site Scripting (XSS) in V2Board thru 1.7.4. The custom_html field in theme configuration is rendered using Blade unescaped output in public/theme/v2board/dashboard.blade.php. An admin can inject arbitrary JavaScript via the saveThemeConfig API. All site visitors execute the payload, enabling cookie theft, session hijacking, or phishing.

    Published:May 1, 2026
    Last Modified:May 11, 2026
    EPS:May 1, 2026
    EPSS Score:0.00032
    CVSS Score:6.9

    Affected Products

    Vendor
    V2board
    Product
    V2board

    Exploits

    https://gist.github.com/sgInnora/1330e1a82caa79906eec55eeff2c99b9

    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