codeql/javascript/ql/test/query-tests/Security/CWE-611/libxml.sax.js

const express = require('express');
const libxmljs = require('libxmljs');

express().get('/some/path', function(req) {
  const parser = new libxmljs.SaxParser();
  parser.parseString(req.param("some-xml")); // NOT OK: the SAX parser expands external entities by default
});