CVE-2026-2247 identifies a critical SQL injection vulnerability (CWE-89) in the Clickedu SaaS platform, widely used for educational management. The flaw exists in the report generation functionality accessed through the mobile application, specifically in the URL generated for downloading student report cards in the 'Day-to-day' section. An authenticated remote attacker can manipulate the 'id_alu' parameter in the URL by appending unusual characters, enabling two types of blind SQL injection attacks: boolean-based and time-based. These attacks allow the attacker to infer database content by observing application responses or timing delays. A key contributing factor is the session token embedded in the URL, which does not expire for days, extending the attack window and increasing risk. The vulnerability requires only low privileges (authenticated user) and no user interaction, making exploitation feasible in typical operational environments. The CVSS 4.0 score of 8.3 reflects the high impact on confidentiality and the ease of exploitation over a network without user interaction. Although no public exploits are reported yet, the vulnerability's presence in all versions of Clickedu SaaS demands urgent attention. The lack of patches currently necessitates immediate compensating controls to prevent data leakage and unauthorized database access.

For European organizations, particularly educational institutions relying on Clickedu SaaS, this vulnerability threatens the confidentiality of sensitive student data, including academic records and personal information. Exploitation could lead to unauthorized data disclosure, violating GDPR and other data protection regulations, resulting in legal and reputational damage. The persistent session tokens exacerbate risk by allowing attackers extended access without re-authentication. Additionally, attackers could leverage the vulnerability to perform further database reconnaissance or pivot to other systems if integrated with broader IT infrastructure. The impact extends beyond data loss to potential operational disruption if attackers manipulate or corrupt database contents. Given the widespread use of Clickedu in European schools and educational bodies, the threat could affect a large number of institutions, undermining trust in digital education platforms and potentially causing regulatory scrutiny.

Immediate mitigation should focus on restricting access to the vulnerable report generation feature by enforcing strict input validation and sanitization on the 'id_alu' parameter to prevent injection of special characters. Implement parameterized queries or prepared statements in the backend to eliminate SQL injection vectors. Session management must be improved by ensuring session tokens embedded in URLs expire promptly and are not reused across multiple days. Organizations should monitor logs for unusual query patterns or repeated access attempts indicative of blind SQL injection. Network-level controls such as Web Application Firewalls (WAFs) can be configured to detect and block SQL injection payloads targeting the affected endpoints. Until an official patch is released, consider disabling the vulnerable feature or restricting its use to trusted networks or users. Conduct security awareness training for administrators and users about the risks of URL sharing containing session tokens. Finally, maintain an incident response plan to quickly address any signs of exploitation.