CVE-2025-11481 identifies a SQL injection vulnerability in the varunsardana004 Blood-Bank-And-Donation-Management-System, a software solution used for managing blood bank and donation operations. The vulnerability resides in the /donate_blood.php script, where the 'fullname' parameter is improperly sanitized, allowing an attacker to inject malicious SQL code. This injection flaw can be exploited remotely without requiring authentication or user interaction, enabling attackers to manipulate backend database queries. The product follows a rolling release model, complicating version tracking and patch management. The CVSS 4.0 score of 5.3 reflects a medium severity, indicating moderate impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. While no active exploitation has been reported, the public availability of exploit code increases the risk of attacks. The vulnerability could lead to unauthorized data disclosure, modification, or deletion, potentially disrupting blood bank operations and compromising sensitive donor and recipient information. The lack of disclosed patches necessitates immediate mitigation through secure coding practices and network defenses.

For European organizations, particularly healthcare providers and blood donation centers using the affected system, this vulnerability poses a significant risk to sensitive personal and medical data confidentiality. Exploitation could result in unauthorized access to donor records, manipulation of blood donation data, or disruption of blood bank services, impacting patient care and operational continuity. The integrity of critical health data could be compromised, leading to erroneous medical decisions. Availability impacts, while less severe, could still disrupt donation workflows. Given the sensitive nature of healthcare data under GDPR, breaches could also result in regulatory penalties and reputational damage. The medium severity rating suggests a moderate but tangible threat that requires timely attention to prevent escalation or chaining with other vulnerabilities.

Organizations should immediately implement input validation and sanitization on all user-supplied data, especially the 'fullname' parameter in /donate_blood.php, to prevent SQL injection. Employing parameterized queries or prepared statements is critical to eliminate direct SQL code injection risks. Network-level protections such as Web Application Firewalls (WAFs) should be deployed to detect and block SQL injection attempts. Regular code audits and penetration testing focused on injection flaws are recommended. Since the product uses a rolling release system with no disclosed patches, organizations should engage with the vendor for updates or consider temporary compensating controls like restricting access to the affected endpoint via network segmentation or VPNs. Logging and monitoring database queries for anomalies can help detect exploitation attempts early. Finally, ensure backups of critical data are maintained to recover from potential data integrity or availability incidents.