CVE-2026-2221 identifies a SQL injection vulnerability in the Online Reviewer System version 1.0 developed by code-projects. The vulnerability exists in the login component, specifically within the /login/index.php file where the Username parameter is not properly sanitized or validated. This allows an attacker to inject malicious SQL code remotely without requiring authentication or user interaction. The injection can manipulate backend SQL queries, potentially exposing sensitive user credentials, modifying database contents, or bypassing authentication mechanisms. The vulnerability has a CVSS 4.0 score of 6.9, reflecting a medium severity level due to its network attack vector, low complexity, and no required privileges or user interaction. Although no active exploitation has been reported, the public release of exploit code increases the likelihood of attacks. The absence of patches or updates from the vendor necessitates immediate defensive measures. This vulnerability primarily impacts confidentiality and integrity, with possible availability consequences if attackers manipulate or delete data. The Online Reviewer System is typically used for collecting and managing user feedback or reviews, making it a valuable target for attackers aiming to access or alter sensitive organizational data.

For European organizations, exploitation of this vulnerability could lead to unauthorized access to sensitive user data, including login credentials and review content, potentially resulting in data breaches and loss of customer trust. Manipulation of database records could disrupt business processes reliant on the Online Reviewer System, impacting service availability and integrity of stored information. Organizations in sectors such as e-commerce, education, and public services using this system may face compliance risks under GDPR due to unauthorized data exposure. The remote and unauthenticated nature of the attack vector increases the threat level, as attackers can exploit the vulnerability without insider access. Additionally, the public availability of exploit code lowers the barrier for attackers, potentially leading to widespread attacks targeting vulnerable installations across Europe. This could also serve as a foothold for further network intrusion or lateral movement within affected organizations.

Organizations should immediately implement input validation and sanitization on the Username parameter to prevent SQL injection. Employing parameterized queries or prepared statements in the login component is critical to eliminate injection vectors. Since no official patches are currently available, consider deploying web application firewalls (WAFs) with specific rules to detect and block SQL injection attempts targeting the /login/index.php endpoint. Conduct thorough code reviews and security testing of the Online Reviewer System to identify and remediate similar vulnerabilities. Restrict access to the login interface via network segmentation or VPNs where feasible to reduce exposure. Monitor logs for suspicious login attempts or anomalous database queries indicative of exploitation attempts. Plan for upgrading to a patched version once released by the vendor or consider alternative software solutions with better security track records. Educate development and security teams about secure coding practices to prevent recurrence.