CVE-2026-2090 is a SQL Injection vulnerability identified in SourceCodester Online Class Record System version 1.0, specifically in the /admin/message/search.php script. The vulnerability arises from improper sanitization or validation of the 'term' parameter, which is used in SQL queries without adequate escaping or parameterization. This allows an unauthenticated remote attacker to inject arbitrary SQL commands by manipulating the 'term' argument, potentially leading to unauthorized data retrieval, modification, or deletion within the backend database. The attack vector requires no user interaction or privileges, making exploitation straightforward once the system is accessible over the network. The vulnerability has been publicly disclosed, although no active exploits have been reported in the wild yet. The CVSS 4.0 base score is 6.9, reflecting a medium severity level due to the remote, unauthenticated nature of the attack but limited impact on system-wide availability or integrity. The lack of patches or vendor-provided fixes necessitates immediate remediation by implementing secure coding practices such as prepared statements and input validation. This vulnerability poses a significant risk to organizations using this software, especially those managing sensitive educational records, as attackers could exfiltrate confidential information or disrupt system operations.

For European organizations, particularly educational institutions and administrative bodies using the SourceCodester Online Class Record System, this vulnerability could lead to unauthorized access to sensitive student and staff data, including grades, attendance, and personal information. The SQL Injection flaw could allow attackers to manipulate or delete records, undermining data integrity and potentially causing operational disruptions. Confidentiality breaches could result in regulatory non-compliance under GDPR, leading to legal and financial consequences. The remote and unauthenticated nature of the exploit increases the risk of widespread attacks, especially in environments where the affected system is exposed to the internet or insufficiently segmented networks. Additionally, the public disclosure of the vulnerability may attract opportunistic attackers targeting European educational sectors, which are increasingly digitized and thus attractive targets. The impact extends beyond data loss to reputational damage and potential interruption of educational services.

To mitigate CVE-2026-2090, organizations should immediately audit and update the /admin/message/search.php code to implement parameterized queries or prepared statements, eliminating direct concatenation of user input into SQL commands. Input validation should be enforced to restrict the 'term' parameter to expected formats and lengths. Network-level protections such as web application firewalls (WAFs) can be configured to detect and block SQL injection patterns targeting this endpoint. Access controls should be reviewed to limit exposure of the vulnerable interface, ideally restricting it to trusted internal networks. Organizations should monitor database logs and application behavior for anomalous queries indicative of exploitation attempts. Since no official patch is currently available, applying custom code fixes or migrating to a more secure system version is critical. Regular security assessments and penetration testing focused on injection flaws will help prevent similar vulnerabilities. Finally, educating developers on secure coding practices and conducting code reviews can reduce the risk of future SQL injection vulnerabilities.