CVE-2025-13344 identifies a SQL injection vulnerability in SourceCodester Train Station Ticketing System version 1.0, specifically in the /ajax.php?action=login endpoint. The vulnerability arises due to improper sanitization of the Username parameter, allowing attackers to inject malicious SQL code remotely without requiring authentication or user interaction. This injection can manipulate backend database queries, potentially exposing sensitive data, modifying or deleting records, or disrupting service availability. The CVSS 4.0 base score of 6.9 reflects a medium severity, considering the attack vector is network-based with low complexity and no privileges or user interaction needed, but with limited impact on confidentiality, integrity, and availability. Although no active exploitation has been observed, the public availability of an exploit increases the likelihood of attacks. The vulnerability affects only version 1.0 of the product, which is used in train station ticketing systems, critical for managing ticket sales and passenger information. Without proper mitigation, attackers could compromise passenger data, disrupt ticketing operations, or escalate attacks within the network. The lack of vendor patches at the time of publication necessitates immediate defensive measures by users.

For European organizations, this vulnerability poses a significant risk to the security and reliability of train station ticketing systems, which are integral to public transportation infrastructure. Exploitation could lead to unauthorized access to passenger personal and payment data, undermining privacy and regulatory compliance such as GDPR. Integrity of ticketing data could be compromised, resulting in fraudulent ticket issuance or denial of service to legitimate users. Availability disruptions could cause operational delays and financial losses. Given the critical nature of transportation services, such attacks could erode public trust and have cascading effects on connected systems. Organizations relying on SourceCodester Train Station Ticketing System 1.0 must consider the threat to both IT security and operational continuity. The medium severity rating suggests a moderate but actionable risk, especially as the exploit is publicly available and requires no authentication.

Organizations should immediately implement input validation and sanitization on all user-supplied data, especially the Username parameter in the /ajax.php?action=login endpoint. Employ parameterized queries or prepared statements to prevent SQL injection. Monitor network traffic for unusual SQL query patterns or repeated failed login attempts that may indicate exploitation attempts. Restrict access to the affected endpoint through network segmentation and web application firewalls (WAFs) configured to detect and block SQL injection payloads. Since no official patch is currently available, consider temporary mitigations such as disabling the vulnerable login functionality if feasible or applying custom code fixes. Conduct thorough code reviews and penetration testing to identify and remediate similar vulnerabilities. Maintain up-to-date backups of ticketing system databases to enable recovery in case of data corruption or loss. Finally, stay alert for vendor updates or patches and apply them promptly once released.