MacCMS v10 through 2026.1000.4056 does not limit attempts on the six-digit password recovery code, allowing unauthenticated attackers to take over member accounts. Attackers knowing a victim's email or phone can request a code and brute-force findpassreset to overwrite the member's password.

A weakness has been identified in MacCMS up to 2025.1000.4052. This vulnerability affects the function orderinfo of the file application/index/controller/User.php of the component Member Order Detail Interface. This manipulation of the argument orderid causes authorization bypass. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.

Maccms v10 was discovered to contain multiple reflected cross-site scripting (XSS) vulnerabilities in /admin.php/admin/art/data.html via the select and input parameters.