此具有csv上载功能的R-Shining是否存在安全漏洞？

我有一个简单的闪亮的应用程序，允许上传一个简单的csv文件

它希望csv文件每行有5个逗号分隔的数字

然后将此文件显示回用户

代码如下：

library(shiny)

ui <- fluidPage(
  fluidRow(
    column(
      2, wellPanel(
        fileInput("file1", "Choose csv file:",
                  multiple = FALSE,
                  accept = c("text/csv",
                             "text/comma-separated-values,text/plain",
                             ".csv")
        )
      )
    )
  ),
  fluidRow(
    column(
      2, tableOutput(outputId = "contents")
    )
  )
)

server <- function(input, output, session) {

  uploaded <- reactive({

    req(input$file1)

    df <- read.csv(input$file1$datapath,
                   header = FALSE,
                   col.names = c("a", "b", "c", "d", "e"),
                   colClasses = rep("numeric", 5))
    return(df)
  })

  output$contents <- renderTable({
    uploaded()
  })
}

shinyApp(ui = ui, server = server)

库（闪亮）
用户界面