CVE-2025-11555 is a SQL injection vulnerability identified in Campcodes Online Learning Management System version 1.0, specifically within the /admin/calendar_of_events.php script. The vulnerability arises from insufficient input validation of the date_start parameter, which is directly used in SQL queries without proper sanitization or parameterization. This flaw allows a remote attacker to inject arbitrary SQL commands, potentially enabling unauthorized data retrieval, modification, or deletion within the LMS database. The attack vector requires no authentication or user interaction, making it highly accessible to remote adversaries. The vulnerability was publicly disclosed on October 9, 2025, with a CVSS 4.0 base score of 6.9, indicating medium severity. Although no active exploits have been reported in the wild, the availability of exploit code increases the likelihood of exploitation attempts. The LMS is typically used by educational institutions to manage courses, events, and user data, making the confidentiality and integrity of sensitive student and staff information at risk. The vulnerability does not require special privileges, and the scope is limited to the affected LMS version 1.0. No official patches have been linked yet, emphasizing the need for immediate mitigation steps by administrators.

For European organizations, particularly educational institutions and training providers using Campcodes LMS 1.0, this vulnerability poses a significant risk to sensitive data such as student records, schedules, and administrative information. Successful exploitation could lead to unauthorized disclosure of personal data, modification of event calendars, or disruption of LMS operations, potentially violating GDPR requirements and damaging institutional reputation. The medium severity score reflects a balance between the ease of exploitation and the limited scope to a single LMS version. However, the lack of authentication and remote exploitability increases the threat level. Disruptions could affect learning continuity and administrative workflows, with potential cascading effects on dependent systems. Organizations failing to address this vulnerability may face regulatory penalties and loss of trust from users and stakeholders.

1. Immediately implement input validation and sanitization for the date_start parameter in /admin/calendar_of_events.php, ensuring only valid date formats are accepted. 2. Refactor database queries to use parameterized statements or prepared queries to eliminate SQL injection vectors. 3. Restrict access to the /admin directory through network-level controls such as VPNs or IP whitelisting to reduce exposure. 4. Monitor web server and application logs for unusual query patterns or repeated attempts to exploit the date_start parameter. 5. If an official patch becomes available from Campcodes, apply it promptly. 6. Conduct a security audit of the entire LMS installation to identify other potential injection points or vulnerabilities. 7. Educate administrators on secure coding practices and the importance of timely updates. 8. Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting this parameter.