Deserialization of Untrusted Data in Chamilo LMS - CVE-2026-70647
Published: August 31, 2026
Vulnerability identifier: #VU146300
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-2026-70647
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in course backup import. A remote user can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Chamilo LMS
How to mitigate CVE-2026-70647
Install updates from vendor's website.
Chamilo LMS - addressed in versions 1.11.40, 2.0.3