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No exploitation reportedFix available

CVE-2021-27191

No exploitation reported by the sources we read.

  • Published2021-02-11
  • Fixed in4.0.0

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-02-1118:15CVE publishedNVD

Versions per branch

NVD · OSV
Get-ip-range project get-ip-range
BranchAffectedFixed in
4.0< 4.0.04.0.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Get-ip-range project get-ip-range to 4.0.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2021-02-11
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-6q4w-3wp4-q5wf

Frequently asked questions

What is CVE-2021-27191?

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.

Is CVE-2021-27191 actively exploited?

Active exploitation of CVE-2021-27191 has not been confirmed. Its EPSS score was 2.1% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-27191?

CVE-2021-27191 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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