Critical severity · published Sep 17, 2026
CVE-2026-45140
Chamilo LMS CStudio upload flow allows unauthenticated remote code execution
9.8
CVSS
1.3%
EPSS
No
On KEV
Description
Chamilo LMS is an open-source learning management system. Prior to 2.0.1, Chamilo LMS allows an unauthenticated remote attacker to execute arbitrary code on the server. The authoritative advisory does not identify the affected endpoint, component, input, or exploitation mechanism. This issue is fixed in version 2.0.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
chamilo-lms · chamilo
< 2.0.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45140
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45140
github.com
https://github.com/chamilo/chamilo-lms/commit/4bdba1b9a8820bd70c0809317775d7f6eaa79844
github.com
https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.1
github.com
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-g4c3-4g96-6g4m
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