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    CVE-2021-47776

    Umbraco CMS v8.14.1 contains a server-side request forgery vulnerability that allows attackers to manipulate baseUrl parameters in multiple dashboard and help controller endpoints. Attackers can craft malicious requests to the GetContextHelpForPage, GetRemoteDashboardContent, and GetRemoteDashboardCss endpoints to trigger unauthorized server-side requests to external hosts.

    Published:Jan 15, 2026
    Last Modified:Apr 7, 2026
    EPS:Jan 15, 2026
    EPSS Score:0.00015
    CVSS Score:5.3

    Affected Products

    Vendor
    Umbraco
    Product
    Umbraco
    Vendor
    Umbraco
    Product
    Umbraco Cms
    Vendor
    Umbraco
    Product
    Umbraco Forms

    Exploits

    https://www.exploit-db.com/exploits/50462

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

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    CVE-2019-13957 (CVSS 9.8) — In Umbraco 7.3.8, there is SQL Injection in the backoffice/PageWApprove/PageWApproveApi/GetInpectSearch method…
    CVE-2015-8815 (CVSS 6.1) — Multiple cross-site scripting (XSS) vulnerabilities in Umbraco before 7.4.0 allow remote attackers to inject a…
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    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