Is this vulnerability remotely exploitable over the internet?

Yes, but it requires authentication. Any attacker who can obtain valid low-privileged credentials and reach the Chamilo LMS upload functionality over the network may exploit the flaw, assuming the environment is configured in a way that allows uploaded files to be executed.

What level of access does an attacker need to exploit this issue?

The attacker needs a low-privileged authenticated account with the ability to upload files in the application. Elevated roles are not strictly required if basic user roles have access to any upload feature that stores files on the server.

What is the safest general fix pattern for developers?

The safest approach is to treat uploads as untrusted data and enforce a multi-layer strategy: implement a strict server-side allowlist of safe file types and extensions, ensure content is stored in non-executable locations, disable script execution in upload directories, and avoid any dynamic inclusion or execution of user-uploaded files.

Severity:

HIGH RISK

(8.8)

Unrestricted File Upload (CWE-434) Leading to Authenticated RCE in Chamilo LMS

CVE-2026-29041

Published:

Mar 5, 2026

Status:

Received

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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March 7, 2026

Vulnerability Type

Category:

Unrestricted File Upload

CWE:

CWE-434

Impact:

Authenticated Remote Code Execution

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Unrestricted File Upload

CWE:

CWE-434

Impact:

Authenticated Remote Code Execution

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Unrestricted File Upload (CWE-434) Leading to Authenticated RCE in Chamilo LMS

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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