data/osv/GO-2026-5942.json

{
  "schema_version": "1.3.1",
  "id": "GO-2026-5942",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "aliases": [
    "CVE-2026-46600"
  ],
  "summary": "Parsing an invalid SVCB or HTTPS RR can panic in golang.org/x/net/dns/dnsmessage",
  "details": "Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.",
  "affected": [
    {
      "package": {
        "name": "stdlib",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "1.26.0-0"
            },
            {
              "fixed": "1.26.6"
            },
            {
              "introduced": "1.27.0-0"
            },
            {
              "fixed": "1.27.0-rc.3"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "net",
            "symbols": [
              "LookupCNAME",
              "Resolver.LookupCNAME",
              "cgoResSearch"
            ]
          }
        ]
      }
    },
    {
      "package": {
        "name": "golang.org/x/net",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.56.0"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "golang.org/x/net/dns/dnsmessage",
            "symbols": [
              "Message.Unpack",
              "Parser.Additional",
              "Parser.AllAdditionals",
              "Parser.AllAnswers",
              "Parser.AllAuthorities",
              "Parser.Answer",
              "Parser.Authority",
              "Parser.HTTPSResource",
              "Parser.SVCBResource",
              "unpackSVCBResource"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "FIX",
      "url": "https://go.dev/cl/786345"
    },
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/79795"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI"
    }
  ],
  "credits": [
    {
      "name": "Mundur (https://github.com/M0nd0R)"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2026-5942",
    "review_status": "REVIEWED"
  }
}