Can cloudflare block all kinds of sql injection attack?

Cloudflare provides some protections against SQL injection attacks, but it cannot guarantee to block all types of attacks.

Cloudflare's Web Application Firewall (WAF) includes a set of predefined rules that can help protect against common SQL injection attacks, as well as other types of attacks. These rules can be customized and tuned to the specific needs of your website or application.

However, it is important to note that Cloudflare's WAF is not foolproof and may not catch all types of attacks. There are also advanced and sophisticated SQL injection techniques that may bypass these protections, especially if the attacker specifically targets your website or application.

In addition to using Cloudflare's WAF, it is recommended to take other steps to prevent SQL injection attacks, such as using parameterized queries, input validation, and least privilege access control. Regular security assessments and vulnerability testing can also help identify and address any weaknesses in your application's security.