Improper access control in Chamilo LMS - CVE-2026-34239
Published: July 7, 2026
Vulnerability identifier: #VU137023
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-34239
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Chamilo
Affected software:
Chamilo LMS
Chamilo LMS
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to improper access control in main/inc/ajax/lang.ajax.php — translate_portfolio_category when handling requests to the endpoint. A remote user can send a crafted request to execute arbitrary code.
The endpoint is reachable by any authenticated user enrolled in a course, including students, teachers, and DRH users.
How to mitigate CVE-2026-34239
Install security update from vendor's website.