← Vulnerability feed

Vulnerability record · CVE-2023-3545 · published 28 November 2023

CVE-2023-3545: Chamilo vulnerability

Chamilo · Chamilo

Improper sanitisation in `main/inc/lib/fileUpload.lib.php` in Chamilo LMS <= v1.11.20 on Windows and Apache installations allows unauthenticated attackers to bypass file upload security protections and obtain remote code execution via uploading of `.htaccess` file. This vulnerability may be exploited by privileged attackers or chained with unauthenticated arbitrary file write vulnerabilities, such as CVE-2023-3533, to achieve remote code execution.

9.8 CVSS 3.1 Critical EPSS 2.4% · top 16.3% CWE-178 · CWE-178
9.8CVSS 3.1 base score
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Improper sanitisation in `main/inc/lib/fileUpload.lib.php` in Chamilo LMS <= v1.11.20 on Windows and Apache installations allows unauthenticated attackers to bypass file upload security protections and obtain remote code execution via uploading of `.htaccess` file. This vulnerability may be exploited by privileged attackers or chained with unauthenticated arbitrary file write vulnerabilities, such as CVE-2023-3533, to achieve remote code execution.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549 Patch
https://starlabs.sg/advisories/23/23-3545/ ExploitThird Party Advisory
https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-125-2023-07-13-Critical-impact-Moderate-risk- Issue TrackingVendor Advisory
https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549 Patch
https://starlabs.sg/advisories/23/23-3545/ ExploitThird Party Advisory
https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-125-2023-07-13-Critical-impact-Moderate-risk- Issue TrackingVendor Advisory

Track CVE-2023-3545 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-3533Chamilo path traversal vulnerabilityPath traversal in file upload functionality in `/main/webservices/additional_webservices.php` in Chamilo LMS <= v1.11.20 allows unauthenticated attac…EPSS 3.5%9.8CVE-2023-3368Chamilo LMS unauthenticated command injection in additional_webservices.phpChamilo LMS through v1.11.20 fails to neutralise special characters in /main/webservices/additional_webservices.php, allowing OS command injection. T…EPSS 70%analysed9.8CVE-2023-34960Chamilo wsConvertPpt SOAP command injectionChamilo versions 1.11.* up to 1.11.18 contain a command injection flaw in the wsConvertPpt component. A crafted PowerPoint name sent through a SOAP A…EPSS 99%analysed9.8CVE-2021-34187Chamilo sql injection vulnerabilitymain/inc/ajax/model.ajax.php in Chamilo through 1.11.14 allows SQL Injection via the searchField, filters, or filters2 parameter.EPSS 16%8.8CVE-2022-42029Chamilo unrestricted file upload vulnerabilityChamilo 1.11.16 is affected by an authenticated local file inclusion vulnerability which allows authenticated users with access to 'big file uploads'…EPSS 0.76%8.8CVE-2022-40407Chamilo unrestricted file upload vulnerabilityA zip slip vulnerability in the file upload function of Chamilo v1.11 allows attackers to execute arbitrary code via a crafted Zip file.EPSS 1.6%8.8CVE-2021-40662Chamilo cross-site request forgery vulnerabilityA Cross-Site Request Forgery (CSRF) in Chamilo LMS 1.11.14 allows attackers to execute arbitrary commands on victim hosts via user interaction with a…EPSS 1.1%7.2CVE-2021-31933Chamilo vulnerabilityA remote code execution vulnerability exists in Chamilo through 1.11.14 due to improper input sanitization of a parameter used for file uploads, and …EPSS 14%

Source: NIST National Vulnerability Database (record CVE-2023-3545), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.