diff --git a/src/main/java/CommandInjection.java b/src/main/java/CommandInjection.java
new file mode 100644
index 00000000..98b7c75b
--- /dev/null
+++ b/src/main/java/CommandInjection.java
@@ -0,0 +1,11 @@
+import java.io.*;
+import javax.servlet.http.HttpServletRequest;
+
+public class CommandInjection {
+    public static Process runCmd(HttpServletRequest request) throws IOException {
+        String filename = request.getParameter("filename");
+        ProcessBuilder builder = new ProcessBuilder("cat", filename);
+        Process process = builder.start();
+        return(process);
+    }
+}