CVE-2023-49278

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    CVE-2023-49278

    Published: 12 Dec 2023Last Modified: 21 Oct 2026

    Summary: Umbraco CMS brute force exploit can be used to collect valid usernames

    Details: Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.4, a brute force exploit can be used to collect valid usernames. Versions 8.18.10, 10.8.1, and 12.3.4 contain a patch for this issue.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49278.json, https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-7x74-h8cw-qhxq, https://nvd.nist.gov/vuln/detail/CVE-2023-49278

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- b8db430615d76521a4394a23f9928dc7c12f87bd
    Fixed -365621023a2e12975104de36e1cbec0829d82804

    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