node.js - How secure is to use req.param secure? -

i building rest api app , wondering if req.param secure user can alter url when getting results simple request.

for example :

app.get('/instruction/:url', function (req, res) {   var url = req.params.url;   ...stuff here... });

i retrieving data url inserted in api wondering how make sure url introduced secure , not going have injection server.

:url url entered example:

the url parameter used "https.request", example rest api url

any suggestion ? enough simple parse string ?

Lix