Caution
Find an alternative to this library, such as express-validator. This library and its primary dependency (last updated 6 years ago) should be considered abandonware.
An express middleware for Caja-HTML-Sanitizer, which wraps Google Caja sanitizer.
A useful complement to the express-validator -- to fill a gap now that XSS sanitization support has been removed from that module's parent node-validator.
yarn add express-sanitizer
or
npm install --save express-sanitizer
Import the module
const expressSanitizer = require('express-sanitizer');Mount the middleware below the express.json() (or, prior to express v4.16, bodyParser()) instantiation and above mounting of your routes
app.use(express.json());
// Mount express-sanitizer middleware here
app.use(expressSanitizer());
app.post('/', function(req, res, next) {
// replace an HTTP posted body property with the sanitized string
const sanitizedString = req.sanitize(req.body.propertyToSanitize);
// send the response -- res.body.sanitized = " world"
res.send({ sanitized: sanitizedString });
});The string
'<script>hello</script> world'will be sanitized to ' world'.
This is a basic implementation of Caja-HTML-Sanitizer with the specific purpose of mitigating against persistent XSS risks (note the borderline abandonware comments in that repo!).
This module trusts the dependencies to provide basic persistent XSS risk mitigation. A user of this package should review all packages and make their own decision on security and fitness for purpose.
- Removed unused dependency
- Unit tests (better late than never)
- Merged PR #3 from Brian M. Jemilo II
- Updated README to base example on an express-generator scaffolded application
- Updated sanitizer dependency to 0.1.3
- Merged PR #4 from @ScottRamsden
- Updated sanitizer dependency to 0.1.2
- Update to v1
- Merged PR removing unused dependency
- Initial release
- Mark Andrews 20metresbelow@gmail.com
- Patrick Hogan patrick@callinize.com
- Scott Ramsden @ScottRamsden
- Brian M. Jemilo II jemiloii@jemiloii.com
Copyright (c) 2021 Mark Andrews 20metresbelow@gmail.com, MIT License