diff --git a/sandboxlib/load/appc.py b/sandboxlib/load/appc.py
index fd1dd4c..e24eead 100644
--- a/sandboxlib/load/appc.py
+++ b/sandboxlib/load/appc.py
@@ -40,7 +40,26 @@ def unpack_app_container_image(image_file):
     try:
         # FIXME: you gotta be root, sorry.
         with tarfile.open(image_file, 'r') as tf:
-            tf.extractall(path=tempdir)
+            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(tf, path=tempdir)
 
         manifest_path = os.path.join(tempdir, 'manifest')
         rootfs_path = os.path.join(tempdir, 'rootfs')