UBUNTU-CVE-2021-23518

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    UBUNTU-CVE-2021-23518

    Published: 21 Jan 2022Last Modified: 17 Oct 2026
    Upstream:
    CVE-2021-23518

    Summary:

    Details: The package cached-path-relative before 1.1.0 are vulnerable to Prototype Pollution via the cache variable that is set as {} instead of Object.create(null) in the cachedPathRelative function, which allows access to the parent prototype properties when the object is used to create the cached relative path. When using the origin path as __proto__, the attribute of the object is accessed instead of a path. **Note:** This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-CACHEDPATHRELATIVE-72573

    References: https://ubuntu.com/security/CVE-2021-23518, https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2348246, https://github.com/ashaffer/cached-path-relative/commit/40c73bf70c58add5aec7d11e4f36b93d144bb760, https://snyk.io/vuln/SNYK-JS-CACHEDPATHRELATIVE-2342653, https://www.cve.org/CVERecord?id=CVE-2021-23518

    Affected packages

    Package

    Name: node-cached-path-relative

    Purl: pkg:deb/ubuntu/node-cached-path-relative?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.0.1-1

    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
    UBUNTU-CVE-2021-23518 | CVE-DB