nginx – permalinks with .php in url not working

I ended up changing

location ~ ^/.*\.php$ {
    try_files $uri = 404;
    fastcgi_pass unix:/var/run/php5-fpm.sock;
    fastcgi_index index.php;
    include fastcgi_params;
}

to

location ~ ^/.*\.php$ {
    try_files $uri $uri/ /index.php?$args;
    fastcgi_pass unix:/var/run/php5-fpm.sock;
    fastcgi_index index.php;
    include fastcgi_params;
}

It now works, but I feel that is a security issue now.