Missing Authorization in Chamilo LMS - CVE-2026-33708
Published: April 24, 2026
Vulnerability identifier: #VU127548
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-33708
CWE-ID: CWE-862
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 disclose sensitive information.
The vulnerability exists due to missing authorization in the get_user_info_from_username REST API endpoint when handling authenticated requests for user information by username. A remote user can send a crafted API request with a target username to disclose sensitive information.
The endpoint returns email address, first name, last name, user ID, username, and active status for arbitrary users.
How to mitigate CVE-2026-33708
Install security update from vendor's website.