What’s Vulnerable › Vulnerabilities

CVE-2021-27191

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-11 · updated 2026-06-17

Description

The get-ip-range package before 4.0.0 for Node.js is vulnerable to denial of service (DoS) if the range is untrusted input. An attacker could send a large range (such as 128.0.0.0/1) that causes resource exhaustion.

Affected products

• Get-Ip-Range Project Get-Ip-Range: before 4.0.0 — fixed in 4.0.0

How to fix

Upgrade to a fixed version: Get-Ip-Range Project Get-Ip-Range 4.0.0. Check the vendor advisory for mitigations.

References

• https://advisory.checkmarx.net/advisory/CX-2021-4304
• https://github.com/JoeScho/get-ip-range/commit/98ca22b815c77273cbab259811ab0976118e13b6
• https://security.netapp.com/advisory/ntap-20210319-0002/
• https://www.npmjs.com/package/get-ip-range
• https://advisory.checkmarx.net/advisory/CX-2021-4304
• https://github.com/JoeScho/get-ip-range/commit/98ca22b815c77273cbab259811ab0976118e13b6
• https://security.netapp.com/advisory/ntap-20210319-0002/
• https://www.npmjs.com/package/get-ip-range

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