: Use bind variables (e.g., ? or :1 ) so the input is treated as data, not executable code.
The payload attempts to force the database to trigger an error message that contains specific data, which confirms the vulnerability and the database type. : : Use bind variables (e
The attacker sees this error in the HTTP response. Because the error contains the 1 (the result of the subquery), the attacker knows the injection worked. : : Use bind variables (e.g.
: Configure the web server to show generic error pages instead of raw database error strings to the end user. : Use bind variables (e
: SQL Injection (Error-Based/Out-of-Band).
: Strict allow-listing of expected characters for the {KEYWORD} field.