CVE-2025-4861 is a critical SQL Injection vulnerability identified in version 1.1 of the PHPGurukul Beauty Parlour Management System, specifically within the /admin/admin-profile.php file. The vulnerability arises from improper sanitization or validation of the 'contactnumber' parameter, which allows an attacker to inject malicious SQL code remotely without requiring authentication or user interaction. This flaw enables an attacker to manipulate backend database queries, potentially leading to unauthorized data access, data modification, or even complete compromise of the database. The vulnerability is classified with a CVSS 4.0 base score of 6.9, indicating a medium severity level, primarily due to limited impact on confidentiality, integrity, and availability (each rated low), but with high exploitability since no privileges or user interaction are required. Although no known exploits are currently observed in the wild, the public disclosure of the exploit code increases the risk of exploitation. The vulnerability may also affect other parameters beyond 'contactnumber', suggesting a broader input validation issue within the application. Given the nature of the application—a management system for beauty parlours—compromise could expose sensitive customer data, business records, and administrative controls, which could be leveraged for further attacks or data theft.

For European organizations using the PHPGurukul Beauty Parlour Management System version 1.1, this vulnerability poses a significant risk to the confidentiality and integrity of customer and business data. Exploitation could lead to unauthorized disclosure of personal identifiable information (PII), including contact details and appointment records, potentially violating GDPR regulations and resulting in legal and financial penalties. The integrity of business data could be compromised, affecting operational reliability and trustworthiness. Additionally, attackers could leverage the vulnerability to escalate privileges or pivot within the network, increasing the risk of broader organizational compromise. The remote and unauthenticated nature of the exploit makes it particularly dangerous for small to medium-sized enterprises that may lack robust cybersecurity defenses. The impact extends beyond individual businesses to potentially affect customer privacy and the reputation of service providers in the European beauty and wellness sector.

To mitigate this vulnerability, organizations should immediately upgrade to a patched version of the PHPGurukul Beauty Parlour Management System once available. In the absence of an official patch, implement strict input validation and sanitization on all user-supplied data, especially the 'contactnumber' parameter and other potentially vulnerable inputs. Employ parameterized queries or prepared statements to prevent SQL injection attacks. Conduct a thorough code review of the application to identify and remediate similar injection points. Deploy Web Application Firewalls (WAFs) configured to detect and block SQL injection patterns targeting the application. Regularly monitor logs for suspicious database query patterns and unauthorized access attempts. Additionally, restrict database user permissions to the minimum necessary to limit the impact of any successful injection. Educate administrative users on security best practices and ensure that the administrative interface is accessible only through secure, authenticated channels, ideally behind VPNs or IP whitelisting. Finally, maintain regular backups of critical data to enable recovery in case of data corruption or loss.