CVE-2025-11662 identifies a SQL injection vulnerability in the SourceCodester Best Salon Management System version 1.0, specifically within the /booking.php script. The vulnerability arises from improper sanitization of the serv_id parameter, which is directly used in SQL queries without adequate validation or parameterization. This flaw enables remote attackers to inject malicious SQL code, potentially allowing unauthorized access to the backend database, data exfiltration, or modification of records. The attack vector requires no authentication or user interaction, making it remotely exploitable over the network. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) confirms that the attack can be launched with low complexity and no privileges. The vulnerability affects confidentiality, integrity, and availability, though the impact is limited by the scope of the affected system and the lack of privilege escalation. No official patch or vendor fix has been released yet, and while no active exploitation in the wild is confirmed, a public exploit code is available, increasing the risk of opportunistic attacks. The Best Salon Management System is typically used by small to medium-sized businesses in the beauty and wellness sector, which may not have robust cybersecurity defenses, increasing their exposure. The vulnerability underscores the importance of secure coding practices, especially input validation and use of parameterized queries in web applications handling sensitive customer and booking data.

For European organizations, particularly small and medium enterprises in the salon and wellness industry using SourceCodester Best Salon Management System 1.0, this vulnerability poses a significant risk. Exploitation could lead to unauthorized disclosure of customer data, including personal and booking information, damaging customer trust and violating data protection regulations such as GDPR. Data integrity could be compromised, allowing attackers to alter booking records or service details, disrupting business operations. Availability impacts may arise if attackers execute destructive SQL commands, potentially causing service outages. Given the lack of authentication requirements, attackers can exploit this remotely, increasing the attack surface. The presence of a public exploit raises the likelihood of automated scanning and exploitation attempts. European organizations may face regulatory penalties and reputational damage if breaches occur. The impact is somewhat mitigated by the niche use of this specific software, but businesses relying on it without compensating controls remain vulnerable.

Immediate mitigation should focus on implementing web application firewalls (WAFs) with rules to detect and block SQL injection attempts targeting the serv_id parameter in /booking.php. Organizations should conduct code audits to identify and remediate unsafe SQL query constructions, replacing them with parameterized queries or prepared statements. Input validation should be enforced to restrict serv_id to expected data types and ranges. Until an official patch is released, consider isolating the affected system from public networks or restricting access via VPN or IP whitelisting. Regularly monitor logs for suspicious query patterns or repeated access attempts to /booking.php. Backup critical data frequently to enable recovery in case of data tampering or loss. Engage with the vendor or community for updates on patches or mitigations. Additionally, educate staff about the risks and signs of exploitation to enhance detection capabilities. For long-term security, consider migrating to more secure and actively maintained salon management solutions.