CVE-2025-7157 is a critical SQL Injection vulnerability identified in version 1.0 of the code-projects Online Note Sharing application. The vulnerability exists in an unspecified function within the /login.php file, where the username and password parameters are improperly sanitized, allowing an attacker to inject malicious SQL code. This flaw enables remote exploitation without requiring authentication or user interaction, making it highly accessible to attackers. Successful exploitation could allow an attacker to bypass authentication controls, retrieve, modify, or delete sensitive data stored in the backend database, and potentially execute administrative operations on the application’s data store. The vulnerability has been publicly disclosed, increasing the risk of exploitation, although no active exploits have been reported in the wild yet. The CVSS 4.0 base score is 6.9, indicating a medium severity level, reflecting the ease of remote exploitation but limited impact on confidentiality, integrity, and availability (each rated low). The vulnerability does not require privileges or user interaction, and the attack vector is network-based, which increases its risk profile. However, the lack of a patch or mitigation details at this time leaves affected systems exposed. Organizations using this specific version of the Online Note Sharing product should consider this vulnerability critical due to the potential for unauthorized data access and manipulation through SQL Injection attacks.

For European organizations, the impact of this vulnerability could be significant, especially for those relying on the affected Online Note Sharing 1.0 application for internal or external collaboration. Exploitation could lead to unauthorized access to sensitive notes and user credentials, resulting in data breaches that compromise confidentiality and potentially lead to regulatory non-compliance under GDPR. The integrity of stored information could be undermined, affecting business operations and trustworthiness of shared data. Availability impact is likely limited but could occur if attackers manipulate or delete critical data. The remote, unauthenticated nature of the attack increases the risk of widespread exploitation, particularly in environments where this software is exposed to the internet without adequate network segmentation or web application firewalls. European organizations in sectors such as education, small-to-medium enterprises, and public administration that may use lightweight note-sharing platforms are at risk. The public disclosure of the vulnerability further elevates the threat landscape, necessitating immediate attention to prevent potential data breaches and operational disruptions.

Given the absence of an official patch, European organizations should implement immediate compensating controls. These include deploying a Web Application Firewall (WAF) with custom rules to detect and block SQL Injection patterns targeting the /login.php endpoint, especially on username and password parameters. Input validation and sanitization should be enforced at the application layer if source code access is available, employing parameterized queries or prepared statements to prevent injection. Network segmentation should be applied to restrict access to the Online Note Sharing application only to trusted internal users or VPN connections, minimizing exposure to external attackers. Monitoring and logging of login attempts and database queries should be enhanced to detect anomalous activities indicative of exploitation attempts. Organizations should also conduct thorough audits to identify any signs of compromise and prepare incident response plans. Finally, they should engage with the vendor or community to obtain or develop patches and plan for timely updates once available.