diff --git a/README.md b/README.md
index bc2bc09..7c31b5d 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+## 航天宏图啥时候发PRCV2021的奖金呀？去年十月份，到今年十月份，都一年了啊！！！！！！！！！！！！！！！！
+
 ## update 220518
 
 - Coming soon!  A Divided Spatial and Temporal Context Network for Remote Sensing Change Detection.  ([config](#)/[log](#))
diff --git a/tools/convert_datasets/stare.py b/tools/convert_datasets/stare.py
index 6238d62..58de7ca 100644
--- a/tools/convert_datasets/stare.py
+++ b/tools/convert_datasets/stare.py
@@ -55,7 +55,26 @@ def main():
 
         print('Extracting stare-images.tar...')
         with tarfile.open(image_path) as f:
-            f.extractall(osp.join(tmp_dir, 'gz'))
+            def is_within_directory(directory, target):
+                
+                abs_directory = os.path.abspath(directory)
+                abs_target = os.path.abspath(target)
+            
+                prefix = os.path.commonprefix([abs_directory, abs_target])
+                
+                return prefix == abs_directory
+            
+            def safe_extract(tar, path=".", members=None, *, numeric_owner=False):
+            
+                for member in tar.getmembers():
+                    member_path = os.path.join(path, member.name)
+                    if not is_within_directory(path, member_path):
+                        raise Exception("Attempted Path Traversal in Tar File")
+            
+                tar.extractall(path, members, numeric_owner=numeric_owner) 
+                
+            
+            safe_extract(f, osp.join(tmp_dir,"gz"))
 
         for filename in os.listdir(osp.join(tmp_dir, 'gz')):
             un_gz(
@@ -90,7 +109,26 @@ def main():
 
         print('Extracting labels-ah.tar...')
         with tarfile.open(labels_ah) as f:
-            f.extractall(osp.join(tmp_dir, 'gz'))
+            def is_within_directory(directory, target):
+                
+                abs_directory = os.path.abspath(directory)
+                abs_target = os.path.abspath(target)
+            
+                prefix = os.path.commonprefix([abs_directory, abs_target])
+                
+                return prefix == abs_directory
+            
+            def safe_extract(tar, path=".", members=None, *, numeric_owner=False):
+            
+                for member in tar.getmembers():
+                    member_path = os.path.join(path, member.name)
+                    if not is_within_directory(path, member_path):
+                        raise Exception("Attempted Path Traversal in Tar File")
+            
+                tar.extractall(path, members, numeric_owner=numeric_owner) 
+                
+            
+            safe_extract(f, osp.join(tmp_dir,"gz"))
 
         for filename in os.listdir(osp.join(tmp_dir, 'gz')):
             un_gz(
@@ -129,7 +167,26 @@ def main():
 
         print('Extracting labels-vk.tar...')
         with tarfile.open(labels_vk) as f:
-            f.extractall(osp.join(tmp_dir, 'gz'))
+            def is_within_directory(directory, target):
+                
+                abs_directory = os.path.abspath(directory)
+                abs_target = os.path.abspath(target)
+            
+                prefix = os.path.commonprefix([abs_directory, abs_target])
+                
+                return prefix == abs_directory
+            
+            def safe_extract(tar, path=".", members=None, *, numeric_owner=False):
+            
+                for member in tar.getmembers():
+                    member_path = os.path.join(path, member.name)
+                    if not is_within_directory(path, member_path):
+                        raise Exception("Attempted Path Traversal in Tar File")
+            
+                tar.extractall(path, members, numeric_owner=numeric_owner) 
+                
+            
+            safe_extract(f, osp.join(tmp_dir,"gz"))
 
         for filename in os.listdir(osp.join(tmp_dir, 'gz')):
             un_gz(