{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.0.0"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.0.0"
              }
            ]
          }
        ]
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "98ca22b815c77273cbab259811ab0976118e13b6"
            }
          ],
          "repo": "https://github.com/joescho/get-ip-range",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "98ca22b815c77273cbab259811ab0976118e13b6"
            }
          ],
          "repo": "https://github.com/joescho/get-ip-range",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "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.",
  "id": "CVE-2021-27191",
  "modified": "2026-03-13T21:58:32.750131528Z",
  "published": "2021-02-11T18:15:18.347Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security.netapp.com/advisory/ntap-20210319-0002/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.npmjs.com/package/get-ip-range"
    },
    {
      "type": "FIX",
      "url": "https://github.com/JoeScho/get-ip-range/commit/98ca22b815c77273cbab259811ab0976118e13b6"
    },
    {
      "type": "EVIDENCE",
      "url": "https://advisory.checkmarx.net/advisory/CX-2021-4304"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}