CVE-2025-11615 identifies a SQL injection vulnerability in SourceCodester Best Salon Management System version 1.0, located in the /panel/add_invoice.php script. The vulnerability arises from improper sanitization of the ServiceId parameter, which is used in SQL queries without adequate validation or parameterization. An attacker can remotely supply crafted input to this parameter to manipulate the underlying SQL query, potentially extracting sensitive data, modifying database contents, or causing denial of service. The vulnerability requires no authentication or user interaction, making it highly accessible for attackers. The CVSS 4.0 score of 6.9 reflects a medium severity, considering the attack vector is network-based with low complexity and no privileges required, but with limited impact on confidentiality, integrity, and availability. Although no active exploitation has been reported, the public release of an exploit increases the likelihood of attacks. The vulnerability affects only version 1.0 of the software, which is primarily used by small and medium salon management businesses. The lack of official patches necessitates immediate mitigation efforts by users. This vulnerability exemplifies common web application security issues related to input validation and underscores the importance of secure coding practices such as prepared statements and parameterized queries.

The impact of CVE-2025-11615 on European organizations primarily concerns small to medium enterprises (SMEs) in the salon and beauty industry that utilize the affected Best Salon Management System version 1.0. Successful exploitation can lead to unauthorized disclosure of customer data, including personal and payment information, violating GDPR and other privacy regulations. Data integrity may be compromised through unauthorized modification or deletion of invoices and service records, disrupting business operations and financial reporting. Availability could also be affected if attackers exploit the vulnerability to cause database errors or crashes. The reputational damage and potential regulatory fines resulting from data breaches could be significant for affected businesses. Additionally, the ease of remote exploitation without authentication increases the risk of widespread attacks, especially if the software is exposed to the internet without adequate network protections. European organizations with limited cybersecurity resources may find it challenging to detect and respond to such attacks promptly, amplifying the threat's impact.

To mitigate CVE-2025-11615, organizations should immediately audit their use of SourceCodester Best Salon Management System version 1.0 and isolate affected instances from public internet exposure. Since no official patch is currently available, developers or administrators should implement input validation and sanitization on the ServiceId parameter, ensuring only expected numeric or predefined values are accepted. Refactoring the code to use parameterized queries or prepared statements will prevent SQL injection by separating code from data. Employing web application firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting the vulnerable endpoint can provide interim protection. Regularly monitoring logs for suspicious activity related to /panel/add_invoice.php and the ServiceId parameter is critical for early detection. Organizations should also consider migrating to updated or alternative salon management solutions with robust security practices. Finally, staff training on secure coding and patch management will help prevent similar vulnerabilities in the future.