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CVE-2026-45140

CriticalPublished

Chamilo LMS CStudio upload flow allows unauthenticated remote code execution

Published: Sep 17, 2026
Updated: Sep 18, 2026
Assigning CNA: GitHub_M
Evidence observed: Sep 18, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

1.0%

Low · next 30 days

Percentile: 60.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2026-45140PoC
Disclosure pack and PoC script for CVE-2026-45140, an unauthenticated path traversal and RCE in Chamilo LMS CStudio upload, with a loopback Docker lab and patch guidance.

Responsible use

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