CVE-2025-11477 is a SQL injection vulnerability identified in version 1.0 of the SourceCodester Wedding Reservation Management System, specifically within the /global.php file. The vulnerability arises from improper sanitization of the User argument, which allows remote attackers to inject arbitrary SQL commands directly into the backend database queries. This injection can be performed without any authentication or user interaction, making it highly accessible to attackers. The vulnerability's CVSS 4.0 base score is 6.9, categorized as medium severity, reflecting the potential for significant impact on confidentiality, integrity, and availability, albeit with limited scope and no privilege requirements. The exploit code has been publicly released, increasing the likelihood of exploitation, although no confirmed active exploitation in the wild has been reported yet. The vulnerability can lead to unauthorized data disclosure, data manipulation, or even complete compromise of the database, depending on the attacker's objectives and the database privileges of the application. The absence of vendor patches or official remediation guidance necessitates immediate defensive measures by users of this software. The vulnerability is particularly critical for organizations relying on this system for managing sensitive customer and event data, as exploitation could result in data breaches or operational disruptions.

For European organizations, the impact of CVE-2025-11477 could be substantial, especially for businesses in the wedding and event management sector using the affected software. Successful exploitation can lead to unauthorized access to personal and financial data of clients, resulting in privacy violations and potential regulatory penalties under GDPR. Data integrity could be compromised, leading to incorrect reservation details or fraudulent bookings, damaging business reputation and customer trust. Availability of the reservation system could be disrupted if attackers manipulate or delete critical data, causing operational downtime and financial losses. The public availability of exploit code increases the risk of opportunistic attacks, including automated scanning and exploitation by cybercriminals. Organizations with inadequate monitoring or lacking web application firewalls are particularly vulnerable. The medium severity rating suggests a moderate but tangible risk that requires timely mitigation to prevent escalation or lateral movement within the network.

To mitigate CVE-2025-11477, organizations should immediately implement input validation and sanitization on the User parameter in /global.php to prevent SQL injection. Employ parameterized queries or prepared statements in the application code to eliminate direct concatenation of user input into SQL commands. Deploy a web application firewall (WAF) with specific rules to detect and block SQL injection attempts targeting this parameter. Conduct thorough code audits to identify and remediate similar injection points elsewhere in the application. Monitor database logs and application behavior for unusual query patterns or access anomalies indicative of exploitation attempts. If vendor patches become available, prioritize their deployment. Additionally, restrict database user privileges to the minimum necessary to limit the impact of any successful injection. Regularly back up databases and test restoration procedures to ensure resilience against data corruption or loss. Educate development and security teams about secure coding practices to prevent recurrence.