CVE-2025-65669 is a critical authorization bypass vulnerability identified in classroomio version 0.1.13, an educational platform used for course management. The vulnerability allows student accounts—normally restricted from administrative functions—to delete courses directly from the Explore page without any authentication or authorization checks. This means that any authenticated or even unauthenticated student user can perform destructive actions that should be reserved for administrators only. The flaw stems from missing or improperly implemented access control mechanisms, classified under CWE-862 (Missing Authorization). The CVSS 3.1 base score of 9.1 reflects the vulnerability's severity, with an attack vector of network (AV:N), no required privileges (PR:N), no user interaction (UI:N), and impacts on integrity and availability (I:H/A:H). Exploiting this vulnerability can lead to unauthorized deletion of course data, causing significant disruption to educational operations, loss of critical information, and potential downtime. Although no public exploits have been reported yet, the simplicity of exploitation and the lack of any authentication barriers make this a high-risk issue. The absence of patches or mitigation guidance in the provided data suggests that affected organizations must implement compensating controls or await vendor fixes. This vulnerability highlights the critical importance of enforcing strict role-based access controls in multi-user educational platforms to prevent unauthorized destructive actions.

For European organizations, particularly educational institutions and e-learning providers using classroomio or similar platforms, this vulnerability poses a severe risk. Unauthorized deletion of courses can disrupt academic schedules, cause loss of educational content, and undermine trust in digital learning environments. The integrity of course data is compromised, and availability is impacted due to potential downtime or recovery efforts. This can lead to operational delays, increased administrative overhead, and reputational damage. Given the critical nature of the flaw and the ease of exploitation without authentication, attackers or malicious insiders could leverage this vulnerability to cause widespread disruption. The impact extends beyond individual institutions to potentially affect students, educators, and administrative staff relying on the platform for daily operations. Additionally, regulatory compliance concerns related to data protection and service continuity may arise, especially under GDPR mandates for data integrity and availability.

Immediate mitigation should focus on restricting access to course deletion functionality through network-level controls or temporary disabling of the affected feature if possible. Organizations should implement strict role-based access control (RBAC) policies ensuring only verified administrators can perform deletion actions. Monitoring and logging of all deletion attempts should be enhanced to detect unauthorized activities promptly. If source code access is available, a code audit and patch to enforce proper authorization checks on the deletion endpoint must be prioritized. In the absence of an official patch, consider deploying web application firewalls (WAFs) with custom rules to block unauthorized deletion requests originating from student accounts. Educate users about the vulnerability and encourage reporting of suspicious activity. Backup strategies should be reviewed and tested to ensure rapid recovery of deleted courses. Finally, maintain close communication with the vendor for timely patch releases and updates.