CVE-2026-0700 identifies a SQL injection vulnerability in the code-projects Intern Membership Management System version 1.0, specifically within the /intern/admin/check_admin.php file. The vulnerability arises from improper input validation of the Username parameter, which is directly used in SQL queries without adequate sanitization or use of prepared statements. This allows remote attackers to manipulate the SQL query logic by injecting malicious SQL code, potentially bypassing authentication, extracting sensitive data, or modifying database contents. The attack vector requires no authentication or user interaction, increasing the risk profile. The vulnerability has been publicly disclosed, though no known exploits have been observed in the wild yet. The CVSS 4.0 base score of 6.9 reflects a medium severity, considering the network attack vector, low complexity, and no privileges or user interaction required, but limited impact on confidentiality, integrity, and availability. The affected product is used for membership management, which typically involves personal and organizational data, making the impact significant if exploited. The lack of available patches necessitates immediate mitigation efforts by organizations using this system. Remediation involves input validation, use of parameterized queries or stored procedures, and restricting access to the vulnerable admin endpoint. Monitoring for suspicious database activity and applying web application firewalls can provide additional defense layers.

For European organizations, exploitation of CVE-2026-0700 could lead to unauthorized access to sensitive membership data, including personal identifiers and organizational information, resulting in data breaches and privacy violations under GDPR. Integrity of membership records could be compromised, affecting operational processes and trustworthiness of the system. Availability impact is limited but could occur if attackers manipulate or delete critical data. The vulnerability's remote and unauthenticated nature increases the attack surface, especially for organizations exposing the admin interface to the internet. This could lead to reputational damage, regulatory penalties, and financial losses. Organizations relying on the Intern Membership Management System for critical membership or access control functions may face operational disruptions. The public disclosure of the vulnerability increases the likelihood of exploitation attempts, necessitating urgent attention from European entities to prevent data compromise and maintain compliance with data protection regulations.

1. Immediately review and sanitize all inputs to the /intern/admin/check_admin.php script, especially the Username parameter, to prevent SQL injection. 2. Refactor the application code to use parameterized queries or prepared statements instead of directly embedding user input into SQL commands. 3. Restrict access to the admin interface by implementing network-level controls such as VPNs, IP whitelisting, or firewall rules to limit exposure. 4. Monitor database logs and web server logs for unusual query patterns or repeated failed access attempts indicative of exploitation attempts. 5. Deploy a Web Application Firewall (WAF) with rules to detect and block SQL injection payloads targeting this endpoint. 6. Conduct a comprehensive security audit of the entire membership management system to identify and remediate other potential injection points. 7. If possible, isolate the membership management system from public networks or place it behind secure reverse proxies. 8. Educate developers and administrators on secure coding practices and the importance of input validation. 9. Prepare incident response plans to quickly address any detected exploitation attempts. 10. Engage with the vendor or community to obtain or develop patches or updated versions addressing this vulnerability.