Sql Injection Challenge 5 Security Shepherd |top| Jun 2026

If the query returns a row, login succeeds.

We cannot perform a UNION attack without knowing how many columns the original query retrieves. We can find this using the ORDER BY technique. Sql Injection Challenge 5 Security Shepherd

To prevent this injection:

Alternative comment syntax in SQL:

: A clear breakdown of different SQLi types, explaining how "classic" tautology injections like the one in this challenge exploit unsanitized inputs. If the query returns a row, login succeeds

SELECT * FROM users WHERE username = '' OR '1'='1'; If the query returns a row