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CVE-2026-94439

🗓️ 08 Oct 2026 22:53:59Reported by GoType 
cve
 cve
🔗 web.nvd.nist.gov👁 67 Views

Request smuggling in net/http after 2xx CONNECT response due to connection desynchronization.

Related
Detection
Affected
Refs
Vulners
Node
OR
golanggoRange<1.26.9
golanggoRange1.27.0–1.27.2
[
  {
    "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": "chunkWriter.writeHeader"
      },
      {
        "name": "CanonicalHeaderKey"
      },
      {
        "name": "Client.CloseIdleConnections"
      },
      {
        "name": "Client.Do"
      },
      {
        "name": "Client.Get"
      },
      {
        "name": "Client.Head"
      },
      {
        "name": "Client.Post"
      },
      {
        "name": "Client.PostForm"
      },
      {
        "name": "ClientConn.Close"
      },
      {
        "name": "ClientConn.RoundTrip"
      },
      {
        "name": "Cookie.String"
      },
      {
        "name": "Cookie.Valid"
      },
      {
        "name": "CrossOriginProtection.AddInsecureBypassPattern"
      },
      {
        "name": "CrossOriginProtection.AddTrustedOrigin"
      },
      {
        "name": "CrossOriginProtection.Check"
      },
      {
        "name": "Dir.Open"
      },
      {
        "name": "Error"
      },
      {
        "name": "Get"
      },
      {
        "name": "Handle"
      },
      {
        "name": "HandleFunc"
      },
      {
        "name": "HandlerFunc.ServeHTTP"
      },
      {
        "name": "Head"
      },
      {
        "name": "Header.Add"
      },
      {
        "name": "Header.Del"
      },
      {
        "name": "Header.Get"
      },
      {
        "name": "Header.Set"
      },
      {
        "name": "Header.Values"
      },
      {
        "name": "Header.Write"
      },
      {
        "name": "Header.WriteSubset"
      },
      {
        "name": "ListenAndServe"
      },
      {
        "name": "ListenAndServeTLS"
      },
      {
        "name": "NewRequest"
      },
      {
        "name": "NewRequestWithContext"
      },
      {
        "name": "NotFound"
      },
      {
        "name": "ParseCookie"
      },
      {
        "name": "ParseSetCookie"
      },
      {
        "name": "ParseTime"
      },
      {
        "name": "Post"
      },
      {
        "name": "PostForm"
      },
      {
        "name": "ProxyFromEnvironment"
      },
      {
        "name": "ReadRequest"
      },
      {
        "name": "ReadResponse"
      },
      {
        "name": "Redirect"
      },
      {
        "name": "Request.AddCookie"
      },
      {
        "name": "Request.BasicAuth"
      },
      {
        "name": "Request.Cookie"
      },
      {
        "name": "Request.Cookies"
      },
      {
        "name": "Request.CookiesNamed"
      },
      {
        "name": "Request.FormFile"
      },
      {
        "name": "Request.FormValue"
      },
      {
        "name": "Request.MultipartReader"
      },
      {
        "name": "Request.ParseForm"
      },
      {
        "name": "Request.ParseMultipartForm"
      },
      {
        "name": "Request.PostFormValue"
      },
      {
        "name": "Request.Referer"
      },
      {
        "name": "Request.SetBasicAuth"
      },
      {
        "name": "Request.UserAgent"
      },
      {
        "name": "Request.Write"
      },
      {
        "name": "Request.WriteProxy"
      },
      {
        "name": "Response.Cookies"
      },
      {
        "name": "Response.Location"
      },
      {
        "name": "Response.Write"
      },
      {
        "name": "ResponseController.EnableFullDuplex"
      },
      {
        "name": "ResponseController.Flush"
      },
      {
        "name": "ResponseController.Hijack"
      },
      {
        "name": "ResponseController.SetReadDeadline"
      },
      {
        "name": "ResponseController.SetWriteDeadline"
      },
      {
        "name": "Serve"
      },
      {
        "name": "ServeContent"
      },
      {
        "name": "ServeFile"
      },
      {
        "name": "ServeFileFS"
      },
      {
        "name": "ServeMux.Handle"
      },
      {
        "name": "ServeMux.HandleFunc"
      },
      {
        "name": "ServeMux.ServeHTTP"
      },
      {
        "name": "ServeTLS"
      },
      {
        "name": "Server.Close"
      },
      {
        "name": "Server.ListenAndServe"
      },
      {
        "name": "Server.ListenAndServeTLS"
      },
      {
        "name": "Server.Serve"
      },
      {
        "name": "Server.ServeTLS"
      },
      {
        "name": "Server.SetKeepAlivesEnabled"
      },
      {
        "name": "Server.Shutdown"
      },
      {
        "name": "SetCookie"
      },
      {
        "name": "Transport.CancelRequest"
      },
      {
        "name": "Transport.Clone"
      },
      {
        "name": "Transport.CloseIdleConnections"
      },
      {
        "name": "Transport.NewClientConn"
      },
      {
        "name": "Transport.RoundTrip"
      },
      {
        "name": "body.Close"
      },
      {
        "name": "body.Read"
      },
      {
        "name": "bodyEOFSignal.Close"
      },
      {
        "name": "bodyEOFSignal.Read"
      },
      {
        "name": "bodyLocked.Read"
      },
      {
        "name": "bufioFlushWriter.Write"
      },
      {
        "name": "cancelTimerBody.Close"
      },
      {
        "name": "cancelTimerBody.Read"
      },
      {
        "name": "checkConnErrorWriter.Write"
      },
      {
        "name": "chunkWriter.Write"
      },
      {
        "name": "connReader.Read"
      },
      {
        "name": "connectMethodKey.String"
      },
      {
        "name": "expectContinueReader.Close"
      },
      {
        "name": "expectContinueReader.Read"
      },
      {
        "name": "extraHeader.Write"
      },
      {
        "name": "fileHandler.ServeHTTP"
      },
      {
        "name": "fileTransport.RoundTrip"
      },
      {
        "name": "globalOptionsHandler.ServeHTTP"
      },
      {
        "name": "gzipReader.Close"
      },
      {
        "name": "gzipReader.Read"
      },
      {
        "name": "http1ClientConn.Close"
      },
      {
        "name": "http1ClientConn.RoundTrip"
      },
      {
        "name": "http2ClientConn.RoundTrip"
      },
      {
        "name": "http2Handler.ServeHTTP"
      },
      {
        "name": "http2ResponseWriter.Flush"
      },
      {
        "name": "http2ResponseWriter.FlushError"
      },
      {
        "name": "http2ResponseWriter.Push"
      },
      {
        "name": "http2RoundTripper.RoundTrip"
      },
      {
        "name": "http3ServerHandler.ServeHTTP"
      },
      {
        "name": "initALPNRequest.ServeHTTP"
      },
      {
        "name": "loggingConn.Close"
      },
      {
        "name": "loggingConn.Read"
      },
      {
        "name": "loggingConn.Write"
      },
      {
        "name": "maxBytesReader.Close"
      },
      {
        "name": "maxBytesReader.Read"
      },
      {
        "name": "onceCloseListener.Close"
      },
      {
        "name": "persistConn.Read"
      },
      {
        "name": "persistConnWriter.ReadFrom"
      },
      {
        "name": "persistConnWriter.Write"
      },
      {
        "name": "populateResponse.Write"
      },
      {
        "name": "populateResponse.WriteHeader"
      },
      {
        "name": "readTrackingBody.Close"
      },
      {
        "name": "readTrackingBody.Read"
      },
      {
        "name": "readWriteCloserBody.CloseWrite"
      },
      {
        "name": "readWriteCloserBody.Read"
      },
      {
        "name": "redirectHandler.ServeHTTP"
      },
      {
        "name": "response.Flush"
      },
      {
        "name": "response.FlushError"
      },
      {
        "name": "response.Hijack"
      },
      {
        "name": "response.ReadFrom"
      },
      {
        "name": "response.Write"
      },
      {
        "name": "response.WriteHeader"
      },
      {
        "name": "response.WriteString"
      },
      {
        "name": "serverHandler.ServeHTTP"
      },
      {
        "name": "socksDialer.DialWithConn"
      },
      {
        "name": "socksUsernamePassword.Authenticate"
      },
      {
        "name": "stringWriter.WriteString"
      },
      {
        "name": "timeoutHandler.ServeHTTP"
      },
      {
        "name": "timeoutWriter.Write"
      },
      {
        "name": "timeoutWriter.WriteHeader"
      },
      {
        "name": "transportReadFromServerError.Error"
      },
      {
        "name": "unencryptedHTTP2Request.ServeHTTP"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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09 Oct 2026 17:16Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
EPSS0.00414
SSVC
67