Auth bypass in Chamilo Chamilo-Lms
CVE-2026-114390
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/chamilo/chamilo-lms/issues/7671 (issue-tracking)
- github.com/chamilo/chamilo-lms/commit/2861afd4896ff898a950302f2c00f44726fa6f0a (patch)
- github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3 (release-notes)
- github.com/chamilo/chamilo-lms/blob/v2.0.0-RC.2/public/main/inc/ajax/course.aja… (technical-description)
- github.com/chamilo/chamilo-lms/blob/v2.0.0-RC.2/public/main/inc/ajax/usergroup… (technical-description)
- github.com/chamilo/chamilo-lms/blob/v2.0.0-RC.2/public/main/inc/ajax/gradebook… (technical-description)
- www.vulncheck.com/advisories/chamilo-lms-2.0.0-alpha.1-before-2.0.0-rc.3-missin… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-114390?
- CVE-2026-114390 is a medium-severity vulnerability in Chamilo Chamilo-Lms, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-10-21.
- How severe is CVE-2026-114390?
- Medium severity. CVSS v3 base score is 5.3 out of 10.