PCI Compliance flagged for Mailchimp plug-in

Hello,

I need help trying to determine how to correct this fail “Cookie Does Not Contain The “HTTPOnly” Attribute” while trying to complete PCI Compliance on the site.
It is with the Mailchimp cookie:
…

Result

url: https://75.103.75.31/
Payload: N/A
matched: Date: Sat, 26 Sep 2020 00:12:06 GMT
Server: Apache
X-Redirect-By: WordPress
Set-Cookie: mailchimp_landing_site=https%3A%2F%2Fciuspress.com%2F; expires=Sat, 24-Oct-2020 00:12:10 GMT; Max-Age=2419200; path=/
Location: https://ciuspress.com/
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8

…
Is this something that I can change or is this plug-in dependant?
How can I resolve?