CVE-2026-114390: Chamilo LMS missing authorization in legacy AJAX handlers

CVE-2026-114390 · Severity: medium · CVSS 5.3 · Published 2026-10-21

Chamilo LMS is a learning management system used by educational institutions to deliver online courses and track student progress. Versions 2.0.0-alpha.1 through 2.0.0-RC.2 contain authorization flaws in AJAX handlers that allow unauthenticated or low-privilege users to access sensitive data including other students' names, certificate PDFs, and grades. An attacker could harvest learner information and confidential academic records without proper permissions.

Technologies: Chamilo Lms. Vendors: Chamilo.

Quick answers

Is CVE-2026-114390 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-114390 being exploited in the wild.
How severe is CVE-2026-114390?
Medium severity, with a CVSS score of 5.3, published 21 October 2026.
Which products and versions are affected?
Chamilo Lms 2.0.0-alpha.1 to 2.0.0-RC.2.
Is there a fix for CVE-2026-114390?
Yes: fixed in 2.0.0-RC.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-114390 attacked?
It is attacked over the network.
Am I affected by CVE-2026-114390?
Check whether you run Chamilo Lms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 2.0.0-RC.3

Technical details

Multiple AJAX endpoints in public/main/inc/ajax/ (course.ajax.php, gradebook.ajax.php) lack proper authorization checks, allowing any user to invoke actions like get_users_by_group_course, user_by_all_roles, and export_all_certificates. The vulnerability requires network access and can be exploited remotely via HTTP requests without authentication or with low-privilege credentials. Attackers gain unauthorized access to personally identifiable information and confidential academic records.

Affected products

  • Chamilo Chamilo LMS 2.0.0-alpha.1 to 2.0.0-RC.2

Timeline

  • 2026-10-21: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.