CVE-2021-28918

CriticalCVSS 9.1/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-704

Affected software

No affected versions have been published.

Timeline

Published: Apr 1, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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