django-helpdesk before 1.0.0 allows Sensitive Data Exposure because of os.umask(0) in models.py.
https://github.com/django-helpdesk/django-helpdesk/releases/tag/v1.0.0
https://github.com/django-helpdesk/django-helpdesk/pull/1120
https://github.com/django-helpdesk/django-helpdesk/issues/591