GHSA-pch5-whg9-qr2r

    Dashboard / Vulnerabilities / GHSA-pch5-whg9-qr2r

    GHSA-pch5-whg9-qr2r

    Published: 29 Mar 2021Last Modified: 10 Sept 2026

    Summary: netmask npm package mishandles octal input data

    Details: The netmask package before 2.0.1 for Node.js mishandles certain unexpected characters in an IP address string, such as an octal digit of 9. This (in some situations) allows attackers to bypass access control that is based on IP addresses. NOTE: this issue exists because of an incomplete fix for CVE-2021-28918.

    References: https://nvd.nist.gov/vuln/detail/CVE-2021-29418, https://github.com/rs/node-netmask/commit/3f19a056c4eb808ea4a29f234274c67bc5a848f4, https://security.netapp.com/advisory/ntap-20210604-0001, https://sick.codes/sick-2021-011, https://sick.codes/universal-netmask-npm-package-used-by-270000-projects-vulnerable-to-octal-input-data-server-side-request-forgery-remote-file-inclusion-local-file-inclusion-and-more-cve-2021-28918, https://vuln.ryotak.me/advisories/6, https://www.npmjs.com/package/netmask

    Affected packages

    Package

    Name: netmask

    Purl: pkg:npm/netmask

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -2.0.1

    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
    GHSA-pch5-whg9-qr2r | CVE-DB