---
id: "CVE-2026-114390"
kind: "vulnerability"
aliases: ["CVE-2026-114390"]
title: "Chamilo LMS: missing authorization lets users harvest names and certificates"
severity: "medium"
cvss: 6.9
epss: 0.00227
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["chamilo", "lms", "package", "php", "self-hosted"]
not_affected_if: ["managed-hosting", "patched-version"]
published_at: "2026-10-21T13:18:29+00:00"
first_seen_at: "2026-10-23T21:57:28+00:00"
updated_at: "2026-10-25T03:39:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114390", "first_seen_at": "2026-10-23T21:57:28+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-114390", "first_seen_at": "2026-10-24T13:15:54+00:00"}]
---

# Chamilo LMS: missing authorization lets users harvest names and certificates

Chamilo LMS versions from 2.0.0-alpha.1 before 2.0.0-RC.3 expose several legacy AJAX handlers without authorization checks. An unauthenticated or low-privileged user can list learner names and download other learners' certificate PDFs.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Chamilo version in the admin footer or `composer.json`; affected if it is `2.0.0-alpha.1` up to but not including `2.0.0-RC.3`
- Look for `public/main/inc/ajax/` handlers such as `get_users_by_group_course`, `user_by_all_roles` and `export_all_certificates` in the deployed code

## Fix

- Upgrade Chamilo LMS to `2.0.0-RC.3` or later
- Until upgraded, restrict access to `public/main/inc/ajax/` at the web server to logged-in staff only

## Timeline

- 2026-10-23T21:57:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-114390
- 2026-10-24T13:15:54+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-114390

## From the sources

Chamilo LMS from 2.0.0-alpha.1 before 2.0.0-RC.3 contains a missing authorization vulnerability in legacy AJAX handlers under public/main/inc/ajax/ that exposes user names and certificates. Unauthenticated or low-privileged users can call actions like get_users_by_group_course, user_by_all_roles, and export_all_certificates to harvest user names and other learners' certificate PDFs.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_