In SeaCMS v6.6.4, there is stored XSS via the member.php?action=chgpwdsubmit email parameter during a password change, as demonstrated by a data: URL in an OBJECT element.
An issue was discovered in SeaCMS 6.64. XSS exists in admin_video.php via the action, area, type, yuyan, jqtype, v_isunion, v_recycled, v_ismoney, or v_ispsd parameter.