diff --git a/chainercv/utils/download.py b/chainercv/utils/download.py
index 29134b5d..86192ed9 100644
--- a/chainercv/utils/download.py
+++ b/chainercv/utils/download.py
@@ -140,4 +140,23 @@ def extractall(file_path, destination, ext):
             t.extractall(destination)
     elif ext == '.gz' or ext == '.tgz':
         with tarfile.open(file_path, 'r:gz') as t:
-            t.extractall(destination)
+            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(t, destination)