CVE-2026-24670 is an improper access control vulnerability classified under CWE-284 affecting the Open eClass platform, a widely used course management system primarily in academic environments. The vulnerability exists in versions prior to 4.2 and allows authenticated students to perform unauthorized actions—specifically, creating new course units. Normally, this functionality is reserved for users with elevated privileges such as instructors or administrators. The flaw arises from insufficient enforcement of role-based access controls within the application, enabling privilege escalation within the authenticated user base. The vulnerability is remotely exploitable over the network without requiring additional user interaction beyond authentication. While it does not compromise confidentiality or availability, it significantly impacts the integrity of the system by allowing unauthorized content creation, which could lead to misinformation, academic record tampering, or disruption of course management. The vendor addressed this issue in version 4.2 by correcting the access control checks. No known exploits are currently reported in the wild, but the vulnerability's nature makes it a potential target for misuse in academic settings.

For European organizations, particularly educational institutions using Open eClass, this vulnerability poses a risk to the integrity of course content and academic workflows. Unauthorized creation of course units by students could lead to confusion, misinformation, and administrative overhead to identify and remove illegitimate content. This could undermine trust in the platform and disrupt teaching activities. While confidentiality and availability are not directly impacted, the integrity compromise may affect accreditation processes and institutional reputation. The impact is more pronounced in countries with widespread adoption of Open eClass, where many institutions rely on the platform for course management. Additionally, the vulnerability could be exploited to conduct further social engineering or phishing attacks by injecting misleading course information. The lack of known exploits reduces immediate risk but does not eliminate the potential for future attacks.

The primary mitigation is to upgrade all Open eClass instances to version 4.2 or later, where the access control flaw has been patched. Organizations should perform an audit of user roles and permissions to ensure that students do not have elevated privileges beyond their intended scope. Implement strict role-based access control policies and monitor logs for unusual activities such as unexpected course unit creation. Employ network segmentation and access controls to limit exposure of the Open eClass platform to trusted users only. Additionally, conduct user awareness training to recognize and report suspicious course content or activities. If upgrading immediately is not feasible, consider temporarily disabling course unit creation features for non-privileged users or applying custom access control patches. Regularly review and apply security updates from the vendor to prevent exploitation of known vulnerabilities.