CVE-2021-20089

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    CVE-2021-20089

    Published: 23 Apr 2021Last Modified: 9 Jul 2026

    Summary:

    Details: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in purl 2.3.2 allows a malicious user to inject properties into Object.prototype.

    References: https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/purl.md

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 6df9a03833ebbd479baede1e0111186a5d9906a2
    Fixed -None

    Affected versions

    2.3.2

    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-2021-20089 | CVE-DB