Joomla! Component jCart for OpenCart 2.0 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the product_id parameter. Attackers can send GET requests to index.php with the option=com_jcart&route=product/product parameters and malicious product_id values to extract sensitive database information.
https://www.vulncheck.com/advisories/joomla-component-jcart-for-opencart-sql-injection