data/osv/GO-2026-4971.json

{
  "schema_version": "1.3.1",
  "id": "GO-2026-4971",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "aliases": [
    "CVE-2026-39836"
  ],
  "summary": "Panic in Dial and LookupPort when handling NUL byte on Windows in net",
  "details": "The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).",
  "affected": [
    {
      "package": {
        "name": "stdlib",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.25.10"
            },
            {
              "introduced": "1.26.0-0"
            },
            {
              "fixed": "1.26.3"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "net",
            "symbols": [
              "Dial",
              "DialTimeout",
              "Dialer.Dial",
              "Dialer.DialContext",
              "Listen",
              "ListenConfig.Listen",
              "ListenConfig.ListenPacket",
              "ListenPacket",
              "LookupAddr",
              "LookupCNAME",
              "LookupHost",
              "LookupIP",
              "LookupMX",
              "LookupNS",
              "LookupPort",
              "LookupSRV",
              "LookupTXT",
              "ResolveIPAddr",
              "ResolveTCPAddr",
              "ResolveUDPAddr",
              "Resolver.LookupAddr",
              "Resolver.LookupCNAME",
              "Resolver.LookupHost",
              "Resolver.LookupIP",
              "Resolver.LookupIPAddr",
              "Resolver.LookupMX",
              "Resolver.LookupNS",
              "Resolver.LookupNetIP",
              "Resolver.LookupPort",
              "Resolver.LookupSRV",
              "Resolver.LookupTXT",
              "Resolver.lookupAddr",
              "Resolver.lookupMX",
              "Resolver.lookupNS",
              "Resolver.lookupPort",
              "Resolver.lookupSRV",
              "Resolver.lookupTXT"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/79006"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
    },
    {
      "type": "FIX",
      "url": "https://go.dev/cl/775320"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2026-4971",
    "review_status": "REVIEWED"
  }
}