Cookie Security: CSRF Cookie not Sent Over SSL

The program does not explicitly set the CSRF_COOKIE_SECURE property to True or set it to False.

Modern web browsers support a Secure flag for each cookie. If the flag is set, the browser will only send the cookie over HTTPS. Sending cookies over an unencrypted channel can expose them to network sniffing attacks, so the secure flag helps keep a cookie's value confidential. This is especially important if the cookie contains private data, session identifiers, or carries a CSRF token.
Example 1: The following configuration entry does not explicitly set the Secure bit for CSRF cookies.

...
MIDDLEWARE = (
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'csp.middleware.CSPMiddleware',
    'django.middleware.security.SecurityMiddleware',
    ...
)
...

If an application uses both HTTPS and HTTP, but does not set the Secure flag, cookies sent during an HTTPS request will also be sent during subsequent HTTP requests. Attackers can then compromise the cookie by sniffing the unencrypted network traffic, which is particularly easy over wireless networks.