CVE-2026-2058 identifies a SQL injection vulnerability in the CloudClassroom-PHP-Project developed by mathurvishal. The vulnerability resides in the /postquerypublic.php file, specifically in the handling of the gnamex parameter within the Post Query Details Page component. An attacker can remotely inject malicious SQL code through this parameter, manipulating backend database queries without requiring authentication or user interaction. This can lead to unauthorized data access, modification, or deletion, compromising the confidentiality, integrity, and availability of the affected system's data. The project uses a rolling release strategy, making it difficult to pinpoint exact affected versions beyond the given commit hash. The vendor has not responded to disclosure attempts, and no official patches are available. Although no widespread exploitation has been reported, published exploits increase the risk of attacks. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality, integrity, and availability at a low level. This vulnerability highlights the importance of secure input validation and parameterized queries in PHP web applications.

The SQL injection vulnerability allows remote attackers to execute arbitrary SQL commands on the backend database, potentially leading to unauthorized data disclosure, data manipulation, or deletion. This can compromise sensitive educational data, user credentials, or administrative information stored in the CloudClassroom system. The integrity of the application and its data can be undermined, affecting trust and operational continuity. Availability may also be impacted if attackers execute destructive queries or cause database errors. Organizations relying on this software for educational or training purposes may face data breaches, regulatory penalties, and reputational damage. The lack of vendor response and patches increases the window of exposure, making timely mitigation critical. Since the exploit is publicly available, the likelihood of attacks increases, especially against unpatched or poorly secured deployments.

Organizations should immediately audit their CloudClassroom-PHP-Project deployments for the presence of the vulnerable /postquerypublic.php file and the gnamex parameter. Until an official patch is released, implement the following mitigations: 1) Apply strict input validation and sanitization on all user-supplied parameters, especially gnamex, to reject or escape SQL meta-characters. 2) Refactor database queries to use prepared statements with parameterized queries to eliminate direct concatenation of user input. 3) Employ web application firewalls (WAFs) with SQL injection detection rules to block malicious payloads targeting this vulnerability. 4) Monitor logs for suspicious query patterns or repeated access to /postquerypublic.php with unusual parameter values. 5) Restrict database user privileges to the minimum necessary to limit the impact of potential exploitation. 6) Consider isolating the application environment and enforcing network segmentation to reduce exposure. 7) Stay alert for vendor updates or community patches and apply them promptly once available. 8) Educate developers on secure coding practices to prevent similar vulnerabilities in future releases.