CVE-2020-36321

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    CVE-2020-36321

    Published: 23 Apr 2021Last Modified: 7 Aug 2026

    Summary:

    Details: Improper URL validation in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.4.1 (Vaadin 14.0.0 through 14.4.2), and 3.0 prior to 5.0 (Vaadin 15 prior to 18) allows attacker to request arbitrary files stored outside of intended frontend resources folder.

    References: https://vaadin.com/security/cve-2020-36321, https://github.com/vaadin/flow/pull/9392

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 8e306579f157678c3baa3f3f63f406d073668161
    Fixed -4623398d1c6817fb6e7e7ae8d05f54cede9c45ee

    Affected versions

    5.0.0.rc1
    5.0.0.beta1
    5.0.0.alpha1

    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-2020-36321 | CVE-DB