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Description
PHPGurukul Billing System 1.0 is vulnerable to SQL Injection in the admin/index.php endpoint. Specifically, the username parameter accepts unvalidated user input, which is then concatenated directly into a backend SQL query.
References
phpgurukul.com/billing-system-using-php-and-mysql
github.com/.../security-research/blob/main/CVE-2025-65380.md