{"id":18922,"date":"2026-10-21T20:17:37","date_gmt":"2026-10-21T17:17:37","guid":{"rendered":"https:\/\/www.hyyat.com\/knowledgebase\/sql-injection\/"},"modified":"2026-10-21T20:17:53","modified_gmt":"2026-10-21T17:17:53","password":"","slug":"sql-injection","status":"publish","type":"docs","link":"https:\/\/www.hyyat.com\/en\/knowledgebase\/sql-injection\/","title":{"rendered":"What Is SQL Injection and How to Protect Your Website Database"},"content":{"rendered":"
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In short<\/b>SQL injection is an attack where someone types database commands into a field on your site, such as search, login or the page URL. If the code places visitor input straight into the query, those commands run, letting the attacker read, change or delete data. Protection: prepared statements, updated plugins, limited database user rights and a web application firewall.<\/div>\n
\"SQL<\/figure>\n

How does the attack work?<\/h2>\n

Most sites store their content and users in a MySQL or MariaDB database. When a visitor searches for a word, the site builds a query that contains it. The trouble starts when the code drops whatever the visitor typed into the query unchecked.<\/p>\n

Instead of a normal search term, the attacker types text that changes the meaning of the query, for example:<\/p>\n

' OR 1=1 --<\/pre>\n
This makes the condition always true, so the site may return every record or allow a login without a password. More complex forms let the attacker read user tables and password hashes.<\/p>\n
What can the attacker do?<\/h2>\n
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1<\/i>Steal data<\/b>Customer details, orders, emails and password hashes.<\/span><\/div>\n
2<\/i>Change content<\/b>Insert spam links, change prices or create a new admin user.<\/span><\/div>\n
3<\/i>Delete data<\/b>Wipe whole tables from the database.<\/span><\/div>\n
4<\/i>Take over<\/b>In some cases it leads to uploading malicious files to the site.<\/span><\/div>\n<\/div>\n
Where is the flaw usually found?<\/h2>\n