The vulnerability identified as CVE-2025-15354 affects the itsourcecode Society Management System version 1.0. The issue resides in the /admin/add_admin.php script, where the Username parameter is improperly sanitized, allowing an attacker to inject malicious SQL code. This SQL injection vulnerability can be exploited remotely without requiring authentication or user interaction, making it highly accessible to attackers. Successful exploitation can lead to unauthorized data access, modification, or deletion within the underlying database, potentially compromising sensitive information managed by the system. The CVSS 4.0 score of 6.9 reflects a medium severity, indicating significant risk but not critical. The vulnerability does not require privileges or user interaction, and the attack complexity is low, increasing its threat potential. Although no active exploits have been reported in the wild, the availability of a public exploit increases the likelihood of future attacks. The lack of official patches or vendor advisories necessitates immediate defensive measures by users of the software. This vulnerability is particularly concerning for organizations managing community or society data, where confidentiality and integrity are paramount. The attack vector being network accessible further broadens the potential attack surface.

For European organizations, exploitation of this SQL injection vulnerability could result in unauthorized access to sensitive personal and administrative data stored within the Society Management System. This could lead to data breaches violating GDPR and other privacy regulations, resulting in legal and financial repercussions. Integrity of data could be compromised, allowing attackers to alter membership records or administrative credentials, potentially leading to unauthorized control over the system. Availability may also be impacted if attackers execute destructive SQL commands or cause database corruption. Organizations relying on this software for managing societies, housing associations, or community groups may face operational disruptions. The reputational damage from a breach could be significant, especially for entities handling sensitive resident or member information. Given the remote and unauthenticated nature of the exploit, attackers could target multiple organizations en masse, increasing the scale of impact across Europe.

Immediate mitigation steps include implementing strict input validation and sanitization on the Username parameter within /admin/add_admin.php, preferably by using parameterized queries or prepared statements to prevent SQL injection. Organizations should restrict access to the admin interface via network segmentation, VPNs, or IP whitelisting to reduce exposure. Monitoring database and application logs for suspicious queries or access patterns can help detect exploitation attempts early. If vendor patches or updates become available, they should be applied promptly. In the absence of official patches, consider deploying Web Application Firewalls (WAFs) with rules to detect and block SQL injection payloads targeting the vulnerable parameter. Conduct security audits and penetration tests focused on injection flaws to identify other potential weaknesses. Educate administrators on the risks and signs of exploitation. Finally, ensure regular backups of the database are maintained to enable recovery in case of data corruption or deletion.