Missing Authentication for Critical Function in Chamilo LMS - CVE-2026-61587
Published: August 4, 2026
Vulnerability identifier: #VU140918
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-61587
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in session.ajax.php when handling the session_info and get_description actions. A remote attacker can send crafted unauthenticated requests to disclose sensitive information.
The issue allows enumeration of session records, extra-field metadata, and session descriptions, which may aid reconnaissance and tenant mapping.
Affected software
Chamilo LMS
How to mitigate CVE-2026-61587
Install security update from vendor's website.
Chamilo LMS - addressed in versions 1.11.40, 2.0.3