Arbitrary file upload in Chamilo LMS - CVE-2026-45140
Published: July 7, 2026
Vulnerability identifier: #VU137014
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-45140
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to unrestricted upload of file with dangerous type in public/plugin/CStudio/editor/import-project/inc/big-upload.php in the CStudio plugin when handling file uploads. A remote attacker can upload a malicious php file and access it to execute arbitrary code.
Affected software
Chamilo LMS
How to mitigate CVE-2026-45140
Install security update from vendor's website.
Chamilo LMS - update to 2.0.1