Vulnerability Instance

url-parse Incorrectly parses URLs that include an '@'
A specially crafted URL with an '@' sign but empty user info and no hostname, when parsed with url-parse, url-parse will return the incorrect href. In particular,

```js
parse(\"http://@/127.0.0.1\")
```
Will return:
```yaml
{
slashes: true,
protocol: 'http:',
hash: '',
query: '',
pathname: '/127.0.0.1',
auth: '',
host: '',
port: '',
hostname: '',
password: '',
username: '',
origin: 'null',
href: 'http:///127.0.0.1'
}
```
If the 'hostname' or 'origin' attributes of the output from url-parse are used in security decisions and the final 'href' attribute of the output is then used to make a request, the decision may be incorrect.