---
id: CVE-2026-114390
title: >-
  Chamilo LMS 2.0.0-alpha.1 before 2.0.0-RC.3 Missing Authorization in AJAX
  Handlers
summary: >-
  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 cal…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-862
vendor: chamilo
product: chamilo-lms
affected:
  - chamilo-lms >= 2.0.0-alpha.1 < 2.0.0-RC.3
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-21T13:27:56.488947Z'
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T13:28:08.185Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114390'
references:
  - url: 'https://github.com/chamilo/chamilo-lms/issues/7671'
  - url: >-
      https://github.com/chamilo/chamilo-lms/commit/2861afd4896ff898a950302f2c00f44726fa6f0a
  - url: 'https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3'
    label: chamilo-lms v2.0.0-RC.3 Release Notes
  - url: >-
      https://github.com/chamilo/chamilo-lms/blob/v2.0.0-RC.2/public/main/inc/ajax/course.ajax.php#L350-L426
  - url: >-
      https://github.com/chamilo/chamilo-lms/blob/v2.0.0-RC.2/public/main/inc/ajax/usergroup.ajax.php#L17-L50
  - url: >-
      https://github.com/chamilo/chamilo-lms/blob/v2.0.0-RC.2/public/main/inc/ajax/gradebook.ajax.php#L58-L99
  - url: >-
      https://www.vulncheck.com/advisories/chamilo-lms-2.0.0-alpha.1-before-2.0.0-rc.3-missing-authorization-in-ajax-handlers
    label: >-
      VulnCheck Advisory: Chamilo LMS 2.0.0-alpha.1 before 2.0.0-RC.3 Missing
      Authorization in AJAX Handlers
tags:
  - cve.org
ingestedAt: '2026-10-21T12:48:53.657Z'
---

## Overview

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.

## Affected

- `chamilo-lms >= 2.0.0-alpha.1 < 2.0.0-RC.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.