CVE-2026-34370
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk14th percentile - higher than 14% of all known CVEs
Summary
Chamilo LMS versions prior to 2.0.0-RC.3 have an IDOR vulnerability in the notebook module. An authenticated student can read private notes of any other user by manipulating the notebook_id parameter in the editnote action. The application fetches note content without ownership verification.
Risk Assessment
An attacker can access sensitive data of other users, violating privacy and potentially leading to information disclosure.
Recommendation
Immediately upgrade to version 2.0.0-RC.3 or later, which includes a fix for this vulnerability.
Original NVD description (English source)
Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the notebook module contains an Insecure Direct Object Reference (IDOR) vulnerability that allows any authenticated student to read the private course notes of any other user on the platform by manipulating the notebook_id parameter in the editnote action. The application fetches the note content using only the supplied integer ID without verifying that the requesting user owns the note, and the full title and HTML body are rendered in the edit form and returned to the attacker's browser. While ownership checks exist in the write paths (updateNote() and delete_note()), they are entirely absent from the read path (get_note_information()). This issue has been fixed in version 2.0.0-RC.3.