diff --git a/YiSha.Util/YiSha.Util/FileHelper.cs b/YiSha.Util/YiSha.Util/FileHelper.cs
index 1b3da2f6..5d75d619 100644
--- a/YiSha.Util/YiSha.Util/FileHelper.cs
+++ b/YiSha.Util/YiSha.Util/FileHelper.cs
@@ -306,6 +306,7 @@ public static TData CheckFileExtension(string fileExtension, string allowExtensi
         public static string FilterFilePath(string filePath)
         {
             filePath = filePath.Replace("../", string.Empty);
+            filePath = filePath.Replace("..", string.Empty);
             filePath = filePath.TrimStart('/');
             return filePath;
         }