CVE-2025-6581 is a SQL Injection vulnerability identified in version 1.0 of the SourceCodester Best Salon Management System, specifically within the /add-customer.php file. The vulnerability arises from improper sanitization and validation of user-supplied input parameters such as name, email, mobile number, gender, details, date of birth, and marriage date. An attacker can remotely manipulate these parameters to inject malicious SQL code, potentially altering the intended SQL queries executed by the backend database. This can lead to unauthorized data access, data modification, or even complete compromise of the database. The vulnerability does not require user interaction or authentication, making it accessible to unauthenticated remote attackers. The CVSS 4.0 score is 5.3 (medium severity), reflecting that while the attack vector is network-based and requires low attack complexity, it does require some privileges (PR:L) and results in limited confidentiality, integrity, and availability impacts. No known exploits are currently observed in the wild, but public disclosure of the exploit code increases the risk of exploitation. The absence of patches or vendor advisories at this time indicates that affected organizations should prioritize mitigation efforts. Given the nature of salon management systems, which typically store customer personal data and appointment details, exploitation could lead to leakage of sensitive personal information and disruption of business operations.

For European organizations using the SourceCodester Best Salon Management System 1.0, this vulnerability poses a risk of unauthorized access to customer personal data, including names, contact details, and sensitive dates such as birth and marriage dates. This could lead to privacy violations under GDPR, resulting in regulatory penalties and reputational damage. Additionally, attackers could manipulate or delete database records, causing operational disruptions to appointment scheduling and customer management. The medium CVSS score suggests that while the impact is not catastrophic, the ease of remote exploitation without user interaction or authentication increases the likelihood of attacks. Small and medium-sized enterprises (SMEs) in the salon and beauty industry, which often have limited cybersecurity resources, may be particularly vulnerable. Furthermore, if attackers leverage this vulnerability as a foothold, they could pivot to broader network compromise, especially in environments where the management system is integrated with other business-critical systems.

1. Immediate mitigation should include implementing web application firewall (WAF) rules to detect and block SQL injection patterns targeting the /add-customer.php endpoint, focusing on the vulnerable parameters (name, email, mobilenum, gender, details, dob, marriage_date). 2. Conduct a thorough code review and apply input validation and parameterized queries (prepared statements) to all database interactions in the affected file to eliminate SQL injection risks. 3. Restrict database user privileges to the minimum necessary for the application to operate, limiting the potential damage from successful injection. 4. Monitor application logs for unusual query patterns or errors indicative of injection attempts. 5. Isolate the salon management system network segment to reduce lateral movement risks if compromised. 6. Engage with the vendor or community to obtain or develop patches and apply them promptly once available. 7. Educate staff on the importance of timely software updates and monitoring for suspicious activity. 8. Consider deploying runtime application self-protection (RASP) tools to detect and block injection attacks in real-time.