CVE-2025-13271 is a SQL injection vulnerability identified in Campcodes School Fees Payment Management System version 1.0, specifically within the /ajax.php?action=login endpoint. The vulnerability arises from improper sanitization and validation of the Username parameter, allowing an attacker to inject malicious SQL code. This flaw enables remote attackers to execute arbitrary SQL queries on the backend database without requiring authentication or user interaction, due to the vulnerable endpoint being accessible over the network. The potential consequences include unauthorized data access, data modification, or even complete compromise of the database, which could lead to leakage of sensitive student and payment information, disruption of payment processing, or further pivoting into the internal network. The vulnerability has a CVSS 4.0 base score of 6.9, reflecting medium severity with network attack vector, low attack complexity, no privileges or user interaction needed, and limited impact on confidentiality, integrity, and availability. Although no known exploits are currently active in the wild, the public disclosure of exploit details increases the risk of exploitation by opportunistic attackers. The lack of available patches or vendor advisories necessitates immediate mitigation efforts by affected organizations.

For European organizations, particularly educational institutions and school administrations using Campcodes School Fees Payment Management System, this vulnerability poses a significant risk to the confidentiality and integrity of sensitive student and financial data. Exploitation could lead to unauthorized disclosure of personal information, financial fraud, and disruption of fee payment processes, impacting operational continuity. Given the critical nature of educational data and regulatory requirements such as GDPR, a breach could result in legal penalties and reputational damage. Furthermore, attackers could leverage this vulnerability to establish persistent access or move laterally within the network, increasing the scope of compromise. The medium severity score suggests a moderate but tangible risk, especially in environments lacking robust network segmentation or monitoring. European organizations with limited cybersecurity maturity or those operating in countries with high cybercrime activity may face elevated threats.

Organizations should immediately implement input validation and sanitization on the Username parameter to prevent SQL injection. Employing parameterized queries or prepared statements in the backend code is essential to eliminate injection vectors. In the absence of an official patch, deploying Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting /ajax.php?action=login can provide interim protection. Conduct thorough code reviews and security testing of the payment system to identify and remediate similar vulnerabilities. Monitor logs for unusual database queries or repeated failed login attempts indicative of exploitation attempts. Network segmentation should be enforced to limit database access only to necessary services. Additionally, organizations should prepare incident response plans specific to data breaches involving payment systems and ensure compliance with GDPR notification requirements. Engaging with the vendor for updates or patches and planning for software upgrades is also recommended.