CVE-2023-4220
Chamilo LMS Unauthenticated Big Upload File Remote Code Execution
- Published
- Nov 28, 2023
- Updated
- Aug 2, 2024
- Assigning CNA
- STAR_Labs
- Evidence observed
- Mar 18, 2025
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.5%
- 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
Unrestricted file upload in big file upload functionality in `/main/inc/lib/javascript/bigupload/inc/bigUpload.php` in Chamilo LMS <= v1.11.24 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution via uploading of web shell.
Sources
28Refurbish Chamilo LMS CVE-2023-4220 exploit written in bash
This is a script written in Python that allows the exploitation of the Chamilo's LMS software security flaw described in CVE-2023-4220
- CVE-2023-4220Exploit
RCE Chamilo 1.11.24
Responsible use
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