{"id":"CVE-2021-27191","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-27191","generatedAt":"2026-10-27T20:21:02.574Z","title":"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.","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.","published":"2021-02-11T18:15:18.000Z","lastModified":"2026-06-17T03:44:26.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":[],"affected":["get-ip-range project/get-ip-range"],"epss":{"score":0.02031,"percentile":0.80913,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.03%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://advisory.checkmarx.net/advisory/CX-2021-4304","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/JoeScho/get-ip-range/commit/98ca22b815c77273cbab259811ab0976118e13b6","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20210319-0002/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.npmjs.com/package/get-ip-range","tags":["Product","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://advisory.checkmarx.net/advisory/CX-2021-4304","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/JoeScho/get-ip-range/commit/98ca22b815c77273cbab259811ab0976118e13b6","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20210319-0002/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.npmjs.com/package/get-ip-range","tags":["Product","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-27191","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}