Description

Step to reproduce:

1. Go to https://book.dansmonorage.blue/password-reset.
2. Type your email and recieve reset password link.
3. Enter a as new password and success.

Proof of Concept

POST /password-reset/D4VUXDL5 HTTP/2
Host: book.dansmonorage.blue
Cookie: csrftoken=ivRWhtdEybPyWPLQQeSerUxyZxoHTLM3n7WEY8ANL6vVlWnx4h5vM5WlNrRlO4Bx; django_language=None
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: vi-VN,vi;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: https://book.dansmonorage.blue/password-reset/D4VUXDL5
Content-Type: application/x-www-form-urlencoded
Content-Length: 114
Origin: https://book.dansmonorage.blue
Upgrade-Insecure-Requests: 1
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: same-origin
Sec-Fetch-User: ?1
Te: trailers

csrfmiddlewaretoken=OraU4Y5nDHGV7JxR8IyUV91JyUlL6hWgT3fCLDswQCmiwQ9ymLLbgkqwmOOp1ALK&password=a&confirm-password=a

Impact

With the server accept weak password lead to allow attacker perform brute-force attack to gain access to the victim's account.