CVE-2021-28918

    Dashboard / Vulnerabilities / CVE-2021-28918

    CVE-2021-28918

    Published: 1 Apr 2021Last Modified: 9 Jul 2026

    Summary:

    Details: Improper input validation of octal strings in netmask npm package v1.0.6 and below allows unauthenticated remote attackers to perform indeterminate SSRF, RFI, and LFI attacks on many of the dependent packages. A remote unauthenticated attacker can bypass packages relying on netmask to filter IPs and reach critical VPN or LAN hosts.

    References: https://github.com/advisories/GHSA-pch5-whg9-qr2r, https://github.com/rs/node-netmask, https://rootdaemon.com/2021/03/29/vulnerability-in-netmask-npm-package-affects-280000-projects/, https://security.netapp.com/advisory/ntap-20210528-0010/, https://www.npmjs.com/package/netmask, https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-011.md, https://www.bleepingcomputer.com/news/security/critical-netmask-networking-bug-impacts-thousands-of-applications/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.0.6
    1.0.5

    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-2021-28918 | CVE-DB