CVE-2025-11555 identifies a SQL injection vulnerability in Campcodes Online Learning Management System version 1.0, located in the /admin/calendar_of_events.php script. The vulnerability arises from improper sanitization of the date_start parameter, which is directly used in SQL queries without adequate validation or parameterization. This allows remote attackers to inject arbitrary SQL code, potentially enabling unauthorized data access, data modification, or denial of service. The attack vector requires no authentication or user interaction, making it remotely exploitable over the network. The CVSS 4.0 vector indicates low complexity and no privileges required, but the impact on confidentiality, integrity, and availability is limited to partial compromise, as the scope is confined to the affected component. No patches or official fixes have been published yet, and while no exploits are currently observed in the wild, the public availability of exploit code increases the likelihood of exploitation attempts. The vulnerability affects only version 1.0 of the Campcodes LMS, which is used primarily in educational environments to manage courses and events. The lack of secure coding practices in input handling is the root cause, emphasizing the need for secure development lifecycle adherence.

For European organizations, particularly educational institutions using Campcodes LMS 1.0, this vulnerability poses a risk of unauthorized data disclosure, data tampering, and potential service disruption. Attackers could extract sensitive student or staff information, manipulate event data, or disrupt LMS availability, impacting academic operations and compliance with data protection regulations such as GDPR. The remote and unauthenticated nature of the exploit increases the attack surface, especially for publicly accessible admin interfaces. While the impact is medium severity, exploitation could lead to reputational damage and legal consequences if personal data is compromised. Organizations relying on this LMS should consider the potential for targeted attacks, especially in countries with large educational sectors or where Campcodes LMS has significant market penetration.

Immediate mitigation involves implementing robust input validation and sanitization for the date_start parameter, preferably by adopting parameterized SQL queries or prepared statements to prevent injection. Restrict access to the /admin/calendar_of_events.php endpoint using network-level controls such as IP whitelisting or VPN access to reduce exposure. Monitor logs for suspicious SQL errors or unusual query patterns indicative of injection attempts. Since no official patch is available, organizations should consider isolating the affected LMS instance or applying web application firewalls (WAF) with custom rules to detect and block SQL injection payloads targeting this parameter. Additionally, conduct a security review of the entire LMS codebase for similar injection flaws and enforce secure coding standards in future development. Regular backups and incident response plans should be updated to prepare for potential exploitation.