CVE-2025-13273 identifies a SQL injection vulnerability in version 1.0 of the Campcodes School Fees Payment Management System, specifically within the /ajax.php?action=delete_payment endpoint. The vulnerability arises from improper sanitization of the 'ID' parameter, which is directly used in SQL queries without adequate validation or parameterization. This allows an attacker to inject malicious SQL code remotely, potentially manipulating the backend database. The attack vector requires no authentication or user interaction, increasing the risk of exploitation. The vulnerability could enable attackers to read, modify, or delete sensitive payment records, compromising confidentiality and integrity of financial data related to school fees. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L), no user interaction (UI:N), and low impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although no public patches or exploits are currently available, the public disclosure of the vulnerability and exploit code increases the risk of future attacks. The lack of scope change (S:N) means the impact is limited to the vulnerable component. This vulnerability is particularly critical for educational institutions relying on this system to manage sensitive financial transactions and student data.

For European organizations, especially educational institutions using Campcodes School Fees Payment Management System 1.0, this vulnerability poses a risk of unauthorized access to sensitive payment and student data. Exploitation could lead to data breaches exposing personally identifiable information (PII) and financial details, potentially violating GDPR regulations and resulting in legal and reputational damage. Attackers could manipulate payment records, causing financial discrepancies and undermining trust in the institution's administrative processes. The remote and unauthenticated nature of the exploit increases the likelihood of attacks originating from external threat actors. Additionally, the exposure of such vulnerabilities could be leveraged for further attacks within the network, impacting availability and integrity of school management services. The medium severity suggests moderate but non-negligible risk, warranting prompt attention to prevent escalation.

To mitigate CVE-2025-13273, organizations should immediately audit and sanitize all inputs to the /ajax.php?action=delete_payment endpoint, specifically the 'ID' parameter. Implement parameterized queries or prepared statements to prevent SQL injection. Restrict database user permissions to the minimum necessary, avoiding elevated privileges that could exacerbate damage if exploited. Monitor web application logs for suspicious activity targeting the vulnerable endpoint. If possible, isolate the payment management system within a segmented network zone to limit exposure. Since no official patches are available, consider applying virtual patching via web application firewalls (WAF) configured to detect and block SQL injection patterns targeting this endpoint. Educate IT staff about the vulnerability and prepare incident response plans in case of exploitation. Engage with the vendor for updates and patches, and plan for timely application once released.