GHSA-6xmx-85x3-4cv2

    Dashboard / Vulnerabilities / GHSA-6xmx-85x3-4cv2

    GHSA-6xmx-85x3-4cv2

    Published: 13 Dec 2023Last Modified: 10 Sept 2026

    Summary: Stored XSS via SVG File Upload

    Details: #### Impact A user with access to the backoffice can upload SVG files that include scripts. If the user can trick another user to load the media directly in a browser, the scripts can be executed. #### Workaround Implement the server side file validation https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation or Serve all media from an different host (e.g cdn) that where umbraco is hosted

    References: https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2, https://nvd.nist.gov/vuln/detail/CVE-2023-49279, https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation, https://github.com/umbraco/Umbraco-CMS

    Affected packages

    Package

    Name: Umbraco.CMS

    Purl: pkg:nuget/Umbraco.CMS

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 7.0.0
    Fixed -7.15.11

    Affected versions

    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
    GHSA-6xmx-85x3-4cv2 | CVE-DB