CVE-2026-1593 identifies a SQL injection vulnerability in the itsourcecode Society Management System version 1.0. The vulnerability exists in the /admin/edit_expenses_query.php script, where the 'detail' parameter is not properly sanitized or validated before being used in SQL queries. This allows an unauthenticated remote attacker to manipulate the SQL query logic by injecting arbitrary SQL code. The attack vector requires no privileges and no user interaction, making it highly accessible for exploitation. The vulnerability can lead to unauthorized disclosure of sensitive data, modification or deletion of database records, and potentially full compromise of the underlying database and application. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no authentication (AT:N), no user interaction (UI:N), and low impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although the impact is rated low on each CIA component, the overall score is medium (6.9) due to ease of exploitation and potential for data compromise. No official patches or fixes have been released, and while no active exploitation in the wild has been reported, the public availability of the exploit code increases the risk of attacks. Organizations using this software should urgently review and remediate this vulnerability to prevent data breaches and service disruption.

For European organizations, the impact of this vulnerability can be significant, especially for those managing community, residential, or society-related data through the itsourcecode Society Management System. Exploitation could lead to unauthorized access to sensitive personal and financial data, undermining privacy and compliance with GDPR regulations. Data integrity could be compromised, affecting financial records and administrative decisions. Availability might also be impacted if attackers manipulate or delete critical data, disrupting society management operations. The medium CVSS score reflects a moderate risk, but the lack of authentication and user interaction requirements means attackers can exploit this remotely and easily, increasing the threat level. Organizations in sectors such as housing associations, local community management, and social organizations are particularly vulnerable. The reputational damage and potential regulatory penalties from data breaches could be severe. Additionally, the public availability of exploit code lowers the barrier for attackers, increasing the likelihood of opportunistic attacks targeting European entities.

To mitigate CVE-2026-1593, organizations should immediately implement input validation and sanitization on the 'detail' parameter within the /admin/edit_expenses_query.php script. Employing parameterized queries or prepared statements is critical to prevent SQL injection. If source code modification is not feasible immediately, deploying Web Application Firewalls (WAFs) with SQL injection detection rules can provide a temporary defense. Monitoring database logs and application behavior for unusual queries or access patterns can help detect exploitation attempts early. Organizations should also isolate the affected system from public networks where possible and restrict access to administrative interfaces. Since no official patches are available, contacting the vendor for updates or applying community-provided fixes is advisable. Regular backups of the database should be maintained to enable recovery in case of data tampering. Finally, raising awareness among system administrators about this vulnerability and ensuring timely application of future patches will reduce risk exposure.