CVE-2026-2058 identifies a SQL injection vulnerability in the CloudClassroom-PHP-Project developed by mathurvishal. The flaw exists in the /postquerypublic.php file within the Post Query Details Page component, where the 'gnamex' parameter is not properly sanitized or validated before being used in SQL queries. This allows an unauthenticated remote attacker to inject malicious SQL code, potentially manipulating the database to extract, alter, or delete sensitive information. The vulnerability is exploitable over the network without any user interaction or privileges, increasing its risk profile. The product's rolling release strategy means that affected versions cannot be precisely enumerated, complicating patch management and vulnerability tracking. Despite the vendor being contacted, no response or patch has been provided, and while no active exploitation has been observed, proof-of-concept exploits are publicly available. The CVSS 4.0 score of 6.9 reflects a medium severity, considering the ease of exploitation and potential impact on confidentiality, integrity, and availability, albeit with limited scope and no authentication required. This vulnerability is particularly concerning for organizations relying on this PHP-based educational platform, as it could lead to data breaches or service disruptions.

For European organizations, this vulnerability poses a significant risk to the confidentiality, integrity, and availability of data managed by the CloudClassroom-PHP-Project platform. Educational institutions and e-learning providers using this software could face unauthorized data disclosure, including sensitive student or staff information, or data manipulation leading to misinformation or operational disruption. The remote and unauthenticated nature of the exploit increases the attack surface, potentially allowing widespread exploitation if the platform is internet-facing. Given the lack of vendor response and patches, organizations may experience prolonged exposure. Additionally, regulatory frameworks such as GDPR impose strict data protection requirements, and exploitation of this vulnerability could lead to compliance violations, legal penalties, and reputational damage. The rolling release model complicates vulnerability management, increasing the risk of unpatched systems remaining in production. Overall, the threat could disrupt educational services and compromise user trust across European institutions using this platform.

Organizations should immediately audit their use of the CloudClassroom-PHP-Project to identify affected instances. Given the absence of official patches, mitigation should focus on implementing input validation and sanitization for the 'gnamex' parameter at the application or web server level, such as using web application firewalls (WAFs) with custom rules to block suspicious SQL injection patterns targeting this parameter. Employing parameterized queries or prepared statements in the codebase, if accessible, can eliminate the injection vector. Network segmentation and restricting access to the affected application to trusted networks can reduce exposure. Continuous monitoring of logs for unusual database queries or errors related to 'gnamex' can help detect attempted exploitation. Organizations should also consider deploying runtime application self-protection (RASP) tools to detect and block injection attempts in real time. Finally, maintaining regular backups and preparing incident response plans specific to SQL injection attacks will aid in rapid recovery if exploitation occurs.