Sql+injection+challenge+5+security+shepherd+new -

Bypass a VIP coupon validation system to retrieve sensitive information or a specific "VIP" coupon code.

Guest note: Remember to buy milk. Admin note: The flag is SQLi_Chall5_Shepherd_8347 sql+injection+challenge+5+security+shepherd+new

The -- comments out the rest. Now the condition is user_id=2 AND note LIKE '%%' (always true for guest notes) user_id=1 (admin). But both conditions are ORed, so all notes where user_id=1 or 2 appear. Bypass a VIP coupon validation system to retrieve

But the app responds with an error:

This level teaches a critical lesson: Never trust client-side filters. Sanitization is not a silver bullet. The only true defense against SQLi is Parameterized Queries (Prepared Statements). sql+injection+challenge+5+security+shepherd+new