INFO LAB : →
This lab contains a SQL injection vulnerability in its stock check feature. The results from the query are returned in the application's response, so you can use a UNION attack to retrieve data from other tables.
The database contains a users table, which contains the usernames and passwords of registered users.
GOAL : →
To solve the lab, perform a SQL injection attack to retrieve the admin user's credentials, then log in to their account.

<storedId>1</stordeId>
if we do any thing in this tag and send to server to show if we can inject here
<storedId>1+1</stordeId>
it’s retrieve the stored Id → 2
what’s happen in SQL Query
SELECT * FROM stock WHERE store_id = 2;
ok Let’s Try to inject that
<storedId>1 UNION SELECT NULL</stordeId>