As we understand the cloudflare bug we believe there should be no issue with site passwords. We use cloudflare to protect against DDoS attacks and to help with site stability. The Cloudflare issue affected non-secure pages (http) but the login page for the forum (where passwords and account login info are passed) is encrypted. The login pages are behind an https url. This page and pages where you change your account info are encrypted.
Here's a link to the login page: https://www.classbforum.com/forums/misc.php?do=login