express-secure-handlebars
Advanced tools
We enhance the ExpressHandlebars server-side view engine by automatically applying Context-aware XSS output filters to better secure your web applications.
express-handlebars with express-secure-handlebars (i.e., to update those require() calls as well as the dependency in your package.json). The nitty-gritties of filter choices and integrations are all automated!$ npm install express-secure-handlebars --save
Simply replace express-handlebars with the express-secure-handlebars package in all require()!
Based on the basic example of ExpressHandlebars, here we show an example app that can be secured only with our package.
views/profile.handlebars:
Given that there is a very typical handlebars template file written like so to incorporate user inputs. The enhanced package can secure the web application by automatically applying context-sensitive output filters, which otherwise is still subject to XSS attacks if using the default escaping approach (e.g., when url is javascript:alert(1) or onclick=alert(1)).
<h1>Example App: {{title}}</h1>
...
<div>User-provided URL: <a href="{{url}}">{{url}}</a></div>
...
views/layouts/main.handlebars:
Same as the Handlebars original example, this file serves as the HTML page wrapper which can be reused for the different views of the app. {{{body}}} is used as a placeholder for where the main content should be rendered.
<!DOCTYPE html>
<html>
<head><meta charset="utf-8"><title>{{title}}</title></head>
<body>
{{{body}}}
</body>
</html>
app.js:
A super simple Express app that registers the Handlebars view engine.
var express = require('express'),
// The only difference is to replace 'express-handlebars' with our enhanced package.
// exphbs = require('express-handlebars');
exphbs = require('express-secure-handlebars');
var app = express();
app.engine('handlebars', exphbs({defaultLayout: 'main'}));
app.set('view engine', 'handlebars');
app.use('/profile', function (req, res) {
res.render('profile', {
title: 'User Profile',
url: req.query.url // an untrusted user input
});
});
app.listen(3000);
Apply your changes to files in src/, and then run the tests.
$ npm test
This software is free to use under the Yahoo Inc. BSD license. See the LICENSE file for license text and copyright information.
FAQs
Secure Express/Handlebars with Context Parser
The npm package express-secure-handlebars receives a total of 5 weekly downloads. As such, express-secure-handlebars popularity was classified as not popular.
We found that express-secure-handlebars demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 5 open source maintainers collaborating on the project.
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