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Vulnerability record · CVE-2026-29041 · published 6 March 2026

CVE-2026-29041: Chamilo lms unrestricted file upload vulnerability

Chamilo · Chamilo Lms

Chamilo is a learning management system. Prior to version 1.11.34, Chamilo LMS is affected by an authenticated remote code execution vulnerability caused by improper validation of uploaded files. The application relies solely on MIME-type verification when handling file uploads and does not adequately validate file extensions or enforce safe server-side storage restrictions. As a result, an authenticated low-privileged user can upload a crafted file containing executable code and subsequently execute arbitrary commands on the server. This issue has been patched in version 1.11.34.

8.8 CVSS 3.1 High EPSS 1.0% · top 38.0% CWE-434 · Unrestricted file upload
8.8CVSS 3.1 base score
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Chamilo is a learning management system. Prior to version 1.11.34, Chamilo LMS is affected by an authenticated remote code execution vulnerability caused by improper validation of uploaded files. The application relies solely on MIME-type verification when handling file uploads and does not adequately validate file extensions or enforce safe server-side storage restrictions. As a result, an authenticated low-privileged user can upload a crafted file containing executable code and subsequently execute arbitrary commands on the server. This issue has been patched in version 1.11.34.

CVSS:3.1/AV:N/AC:L/PR:L/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/releases/tag/v1.11.34 ProductRelease Notes
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-4pc3-4w2v-vwx8 MitigationVendor Advisory

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Related vulnerabilities

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

9.8CVE-2026-33707Chamilo lms weak password recovery vulnerabilityChamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, the default password reset mechanism generates tokens using sha1($email…EPSS 0.75%9.8CVE-2025-50187Chamilo lms vulnerabilityChamilo is a learning management system. Prior to version 1.11.28, parameter from SOAP request is evaluated without filtering which leads to Remote C…EPSS 0.88%9.8CVE-2023-34944Chamilo lms unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in the /fileUpload.lib.php component of Chamilo 1.11.* up to v1.11.18 allows attackers to execute arbitrary co…EPSS 1.1%9.8CVE-2022-27423Chamilo lms sql injection vulnerabilityChamilo LMS v1.11.13 was discovered to contain a SQL injection vulnerability via the blog_id parameter at /blog/blog.php.EPSS 0.99%9.8CVE-2021-35414Chamilo lms sql injection vulnerabilityChamilo LMS v1.11.x was discovered to contain a SQL injection via the doc parameter in main/plagiarism/compilatio/upload.php.EPSS 1.9%9.8CVE-2019-13082Chamilo lms unrestricted file upload vulnerabilityChamilo LMS 1.11.8 and 2.x allows remote code execution through an lp_upload.php unauthenticated file upload feature. It extracts a ZIP archive befor…EPSS 4.0%9.8CVE-2018-1999019Chamilo lms code injection vulnerabilityChamilo LMS version 11.x contains an Unserialization vulnerability in the "hash" GET parameter for the api endpoint located at /webservices/api/v2.ph…EPSS 3.2%9.3CVE-2026-33698Chamilo lms vulnerabilityChamilo LMS is a learning management system. Prior to 1.11.38, a chained attack can enable otherwise-blocked PHP code from the main/install/ director…EPSS 0.58%

Source: NIST National Vulnerability Database (record CVE-2026-29041), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.