CVE-2025-44134 is a medium severity SQL injection vulnerability identified in the Code-Projects Online Class and Exam Scheduling System version 1.0, specifically within the /Scheduling/pages/class_save.php file. The vulnerability arises from improper sanitization or validation of the 'class' parameter, allowing an attacker to manipulate this input to inject malicious SQL code. This can lead to unauthorized access or modification of the backend database. The CVSS 3.1 base score is 6.5, reflecting a network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction needed (UI:N), unchanged scope (S:U), and impacts on confidentiality and integrity (C:L/I:L) but no impact on availability (A:N). Exploiting this vulnerability could allow an attacker to read or alter sensitive scheduling data, potentially exposing personal information of students, instructors, or exam schedules, or corrupting scheduling records. Although no known exploits are currently reported in the wild, the vulnerability is publicly disclosed and could be targeted by attackers scanning for vulnerable installations. The lack of vendor or product details and absence of patches suggests this may be a niche or less widely distributed system, but the presence of CWE-89 confirms the SQL injection nature of the flaw. The vulnerability does not require authentication or user interaction, increasing its risk profile in exposed environments.

For European organizations, particularly educational institutions or training providers using the affected scheduling system, this vulnerability could lead to unauthorized disclosure of sensitive personal data, including student identities, exam schedules, and class details. Integrity impacts could disrupt scheduling operations, causing administrative chaos and potentially affecting exam integrity or class attendance. While availability is not directly impacted, the indirect effects of data manipulation could degrade trust and operational efficiency. GDPR implications are significant, as unauthorized data exposure could lead to regulatory penalties and reputational damage. The vulnerability's network accessibility and lack of required privileges mean that any exposed web interface could be targeted remotely by attackers, increasing the risk for institutions with internet-facing scheduling portals. Additionally, attackers could leverage this vulnerability as a foothold for further lateral movement or data exfiltration within the organization's network if the scheduling system is integrated with other internal systems.

1. Immediate code review and sanitization: Developers should implement strict input validation and parameterized queries (prepared statements) for the 'class' parameter to prevent SQL injection. 2. Web application firewall (WAF): Deploy or update WAF rules to detect and block SQL injection patterns targeting the scheduling system endpoints. 3. Network segmentation: Isolate the scheduling system from public networks or restrict access via VPN or IP whitelisting to reduce exposure. 4. Monitoring and logging: Enable detailed logging of database queries and web requests to detect anomalous activities indicative of injection attempts. 5. Patch management: Engage with the vendor or development team to obtain or develop patches addressing this vulnerability. 6. Conduct penetration testing focused on injection flaws to verify remediation effectiveness. 7. Educate administrative staff to recognize unusual system behaviors or data inconsistencies that may indicate exploitation. 8. If immediate patching is not possible, consider disabling or restricting access to the vulnerable endpoint until a fix is applied.