Prevent SQL injection in get_user_by_id by casting user_id to integer #113
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This SQL injection vulnerability in include/functions.inc.php allows attackers to execute arbitrary SQL queries, potentially leading to data breaches or unauthorized access. The
get_user_by_idfunction (lines 28-34) directly concatenates the$user_idparameter into an SQL query without proper sanitization or parameterization. This allows a malicious user to inject SQL code by manipulating theuser_idparameter, resulting in the execution of arbitrary SQL commands.