Medium severity · published Nov 28, 2023
CVE-2023-4220
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…
6.1
CVSS
76.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)76.1% · higher than 100% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
Chamilo Lms · Chamilo
through 1.11.24 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4220
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4220
Patch
https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49
Exploit
https://starlabs.sg/advisories/23/23-4220
Issue Tracking
https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-130-2023-09-04-Critical-impact-High-risk-Unauthenticated-users-may-gain-XSS-and-unauthenticated-RCE-CVE-2023-4220
More from Chamilo Lms
9.8
CVE-2026-45140
Chamilo LMS CStudio upload flow allows unauthenticated remote code execution
9.8
CVE-2026-33707
Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms
9.8
CVE-2026-33698
Chamilo LMS affected by unauthenticated RCE in main/install folder
9.8
CVE-2026-28430
Chamilo LMS Vulnerable to Unauthenticated SQL Injection in chamiko-lms model.ajax.php
9.8
CVE-2025-52998
Chamilo: PHAR deserialization bypass