diff --git a/datasets/preprocess/preprocess.py b/datasets/preprocess/preprocess.py
index 0b10895..92e7655 100644
--- a/datasets/preprocess/preprocess.py
+++ b/datasets/preprocess/preprocess.py
@@ -8,13 +8,51 @@
 
 def mini_imagenet():
     with tarfile.open('mini_imagenet_full_size.tar.bz2', 'r') as tar:
-        tar.extractall()
+        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(tar)
     os.rename('mini_imagenet_full_size', 'mini_imagenet')
 
 
 def tiered_imagenet():
     with tarfile.open('tiered_imagenet.tar', 'r') as tar:
-        tar.extractall()
+        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(tar)
 
 
 def CIFAR_FS():
@@ -35,7 +73,26 @@ def CIFAR_FS():
 def CUB():
     phase_list = ['train', 'val', 'test']
     with tarfile.open('CUB_200_2011.tgz', 'r') as tar:
-        tar.extractall()
+        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(tar)
     for phase in phase_list:
         os.makedirs('CUB/{}'.format(phase))
     for phase in phase_list: