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CSRF Protection

Cross-site request forgery (also known as CSRF or XSRF) is a type of malicious exploit of a website where unauthorized commands are transmitted from a user that the web application trusts. To mitigate this kind of attack you can use the csurf package.

Use with Express (default)#

Start by installing the required package:

$ npm i --save csurf

Warning As explained on the csurf middleware page, the csurf module requires either session middleware or a cookie-parser to be initialized first. Please see that documentation for further instructions.

Once the installation is complete, apply the csurf middleware as global middleware.

import * as csurf from 'csurf';
// somewhere in your initialization file
app.use(csurf());

Use with Fastify#

Start by installing the required package:

$ npm i --save fastify-csrf

Once the installation is complete, register the fastify-csrf plugin, as follows:

import fastifyCsrf from 'fastify-csrf';
// somewhere in your initialization file
app.register(fastifyCsrf);