The host is running Django and is prone to Algorithmic Complexity vulnerability.
Successful exploitation will allow attacker to cause a Denial of Service due to high CPU consumption via specially crafted email addresses or URLs. Impact Level: System/Application
Upgrade to Django version 1.0.4 or 1.1.1 or later. http://www.djangoproject.com/download/
The flaw is due to an error within the regular expressions used for validation of the 'EmailField' or 'URLField' form fields in Django's forms library.
Django version prior to 1.0 before 1.0.4 and 1.1 before 1.1.1