Describe the bug
When I am running SQLMap against a DVWA instance with basic auth enabled, SQLMap fails due to unauthorized requests. [CRITICAL] not authorized, try to provide right HTTP authentication type and valid credentials (401)

I double checked the basic auth credentials and they are correct.

I tried to debug this issue by intercepting SQLMap`s requests and found that every request is sent twice, one with the basic auth credentials and one without. (see the screenshot)

To Reproduce

1. Run 'sqlmap --auth-type="Basic" --auth-cred="htaccess:htaccess" --batch --time-sec=20 --output-dir=./output --level=2 --risk=3 --method=get --answer="keep=Y,skip=N,follow=N,select=q,detect=Y,extending=Y,sure=Y" --url="http://127.0.0.1:80/vulnerabilities/sqli/?id=1&Submit=Submit"'

Expected behavior
I would expect SQLMap to send requests with the basic auth credentials only. Furthermore, I would expect SQLMap not to close with a not authorized error.

Screenshots

Running environment:

• sqlmap version 1.4.4#stable and 1.4.8#stable
• Ubuntu package manager (apt) and Arch Linux package manager (pacman)
• Ubuntu and Arch Linux
• Python version 3.8.5

Target details:

• DVWA with basic auth enabled