What are common misconfigurations in Cloudflare that can lead to security vulnerabilities?

Common misconfigurations include overly permissive firewall rules, disabled or improperly configured SSL/TLS settings (allowing weak ciphers), incorrect Page Rules that bypass security features, exposed origin server due to improper DNS settings, weak or default Cloudflare account credentials, and insufficient logging/monitoring. Also, failing to regularly update Cloudflare software can introduce vulnerabilities.