I installed a CH from debian repos (just copied from docs) and installation process asking me for a password, I typed my testing password ended by "();" witouth quotes.

After install I can access without any password.

users.xml show like "<password></password>" for default user.

¯\\\_(ツ)\_/¯

if (fs::exists(users_config_file))
            fs::permissions(users_config_file, fs::perms::owner_read, fs::perm_options::replace);
        
        if (fs::exists(log_path))
        {
            fmt::print("Log directory {} already exists.\n", log_path);
        }
        else
        {
            fmt::print("Creating log directory {}.\n", log_path);
            fs::create_directories(log_path);
        }
        if (fs::exists(data_path))
        {
            fmt::print("Data directory {} already exists.\n", data_path);
        }
        else
        {
            fmt::print("Creating data directory {}.\n", data_path);
            fs::create_directories(data_path);
        }
        if (fs::exists(pid_path))
        {
            fmt::print("Pid directory {} already exists.\n", pid_path);
        }
        else
        {
            fmt::print("Creating pid directory {}.\n", pid_path);
            fs::create_directories(pid_path);
        }