data/cve/v5/GO-2026-6609.json

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.0",
  "cveMetadata": {
    "cveId": "CVE-2026-78667"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc"
      },
      "title": "Lack of limit on size of parsed Range headers in net/http",
      "descriptions": [
        {
          "lang": "en",
          "value": "When parsing a Range header containing a large number of small ranges, FileServer(FS), ServeContent, and ServeFile(FS) can consume an excessive amount of CPU."
        }
      ],
      "affected": [
        {
          "vendor": "Go standard library",
          "product": "net/http",
          "collectionURL": "https://pkg.go.dev",
          "packageName": "net/http",
          "versions": [
            {
              "version": "0",
              "lessThan": "1.26.9",
              "status": "affected",
              "versionType": "semver"
            },
            {
              "version": "1.27.0-0",
              "lessThan": "1.27.2",
              "status": "affected",
              "versionType": "semver"
            }
          ],
          "programRoutines": [
            {
              "name": "parseRange"
            },
            {
              "name": "ServeContent"
            },
            {
              "name": "ServeFile"
            },
            {
              "name": "ServeFileFS"
            },
            {
              "name": "fileHandler.ServeHTTP"
            },
            {
              "name": "fileTransport.RoundTrip"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://go.dev/cl/847309"
        },
        {
          "url": "https://go.dev/issue/81858"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/U2fTuyDJznI"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-6609"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Jakub Ciolek (https://ciolek.dev)"
        }
      ]
    }
  }
}