data/osv/GO-2026-6089.json

{
  "schema_version": "1.3.1",
  "id": "GO-2026-6089",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "aliases": [
    "CVE-2026-56853"
  ],
  "summary": "Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check in net/http",
  "details": "When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is unexpectedly not being applied when doing this.",
  "affected": [
    {
      "package": {
        "name": "stdlib",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.25.13"
            },
            {
              "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/http",
            "symbols": [
              "ListenAndServe",
              "ListenAndServeTLS",
              "Serve",
              "ServeTLS",
              "Server.ListenAndServe",
              "Server.ListenAndServeTLS",
              "Server.Serve",
              "Server.ServeTLS",
              "conn.readRequest",
              "conn.serve"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/80205"
    },
    {
      "type": "FIX",
      "url": "https://go.dev/cl/795540"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2026-6089",
    "review_status": "REVIEWED"
  }
}