August 8, 2026
(BAC)Insecure direct object references
firstly we explain what of the Insecure direct object references???
By Abdallh Mohamed
1 min read
The idea is that the user can change the ID, and the server trusts this ID without verifying permissions.
okay her we go solve lab
After logging in and crawling the site, I found ChatDost. Clicking the "view transcript" button led me to this response.
look IN GET /download- transcript/2.txt lets change it from 2 to 1 and see respone
like this
and her we go we found The chat of another user and inside it is their password
Let's use this to gain complete control of this person's account.
and her we go We solved this lab
How to FIx
The solution to this vulnerability is for the developer to implement an authorization process on the server, which verifies that the current user has the necessary permissions to access the account they are requesting. If they do not have these permissions, the request is rejected, and a response such as 403 Forbidden is returned.d
The Golden Rule
Never trust any User ID that comes from the client. The server must always verify that the current user is authorized to access the requested resource.