CVE-2020-27304

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    CVE-2020-27304

    Published: 21 Oct 2021Last Modified: 20 Oct 2026

    Summary:

    Details: The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows, when using the built-in HTTP form-based file upload mechanism, via the mg_handle_form_request API. Web applications that use the file upload form handler, and use parts of the user-controlled filename in the output path, are susceptible to directory traversal

    References: https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf, https://groups.google.com/g/civetweb/c/yPBxNXdGgJQ, https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf, https://jfrog.com/blog/cve-2020-27304-rce-via-directory-traversal-in-civetweb-http-server/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 016535194f6dba8e534b6eec6b9d433e6fb0a9b2
    Fixed -eefb26f82b233268fc98577d265352720d477ba4

    Affected versions

    v1.14

    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
    CVE-2020-27304 | CVE-DB