Path traversal in Chamilo LMS - CVE-2026-61603
Published: August 4, 2026
Vulnerability identifier: #VU140914
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2026-61603
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to path traversal in the Moodle course import handler in public/main/inc/lib/MoodleImport.php when extracting a crafted .mbz archive. A remote user can upload a crafted backup archive containing path-traversal entries to write files to arbitrary server locations and execute arbitrary code.
Exploitation requires teacher-level access with course import capability, and code execution occurs as the web server user.
Affected software
Chamilo LMS
How to mitigate CVE-2026-61603
Install security update from vendor's website.
Chamilo LMS - update to 2.0.3