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Summary:
It have been identified that `urlparse` under `urllib.parse` module is detecting wrong hostname which could leads to a security issue known as Open redirect vulnerability.
Steps to reproduce the issue:
Following code will help you in reproducing the issue:
```
from urllib.parse import urlparse
x= 'http://www.google.com\@xxx.com'
y = urlparse(x)
print(y.hostname)
```
Output:
xxx.com
The hostname from above URL which is actually rendered by browser is : 'https://www.google.com'.
In following browsers tested: (hostname detected as: https://www.google.com)
```
1. Chromium - Version 72.0.3626.7 - Developer Build
2. Firefox - 60.4.0esr (64-bit)
3. Internet Explorer - 11.0.9600.17843
4. Safari - Version 12.0.2 (14606.3.4)
```