fix: switch from uuid1 to uuid4 for better randomness

Author: RinZ27

flask_appbuilder/filemanager.py

@@ -224,7 +224,7 @@ def get_save_format(self, filename, image):
 
 
 def uuid_namegen(file_data):
-    return str(uuid.uuid1()) + "_sep_" + file_data.filename
+    return str(uuid.uuid4()) + "_sep_" + file_data.filename
 
 
 def get_file_original_name(name):

flask_appbuilder/security/sqla/manager.py

@@ -326,7 +326,7 @@ def add_register_user(
                 method=current_app.config.get("FAB_PASSWORD_HASH_METHOD", "scrypt"),
                 salt_length=current_app.config.get("FAB_PASSWORD_HASH_SALT_LENGTH", 16),
             )
-        register_user.registration_hash = str(uuid.uuid1())
+        register_user.registration_hash = str(uuid.uuid4())
         try:
             self.session.add(register_user)
             self.session.commit()