CVE-2026-34370— Chamilo LMS: IDOR in the Notebook Module allows an attacker to view other users' private notes
Quick assessment
Affected
chamilo chamilo-lms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Chamilo LMS是Chamilo开源的一套开源的在线学习和协作系统。该系统支持创建教学内容、远程培训和在线答题等。 Chamilo LMS 2.0.0-RC.3之前版本存在安全漏洞，该漏洞源于笔记本模块存在不安全的直接对象引用漏洞，可能导致任何经过身份验证的学生通过操纵editnote操作中的notebook_id参数读取平台上任何其他用户的私人课程笔记。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-34370
Vulnerability Information
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Vulnerability Title
Chamilo LMS: IDOR in the Notebook Module allows an attacker to view other users' private notes
Source: CVE Program / CVE List V5
Vulnerability Description
Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the notebook module contains an Insecure Direct Object Reference (IDOR) vulnerability that allows any authenticated student to read the private course notes of any other user on the platform by manipulating the notebook_id parameter in the editnote action. The application fetches the note content using only the supplied integer ID without verifying that the requesting user owns the note, and the full title and HTML body are rendered in the edit form and returned to the attacker's browser. While ownership checks exist in the write paths (updateNote() and delete_note()), they are entirely absent from the read path (get_note_information()). This issue has been fixed in version 2.0.0-RC.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Chamilo LMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chamilo LMS是Chamilo开源的一套开源的在线学习和协作系统。该系统支持创建教学内容、远程培训和在线答题等。 Chamilo LMS 2.0.0-RC.3之前版本存在安全漏洞，该漏洞源于笔记本模块存在不安全的直接对象引用漏洞，可能导致任何经过身份验证的学生通过操纵editnote操作中的notebook_id参数读取平台上任何其他用户的私人课程笔记。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| chamilo | chamilo-lms | < 2.0.0-RC.3 | - |
|
II. Public POCs for CVE-2026-34370
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · chamilo · 2026-04-14 · 8 CVEs total
| CVE-2026-35196 | 8.8 HIGH | Chamilo LMS has OS Command Injection via export_all_certificates action |
| CVE-2026-40291 | 8.8 HIGH | Chamilo LMS has Privilege Escalation via API User Role Modification |
| CVE-2026-34160 | 8.6 HIGH | Chamilo LMS: Unauthenticated SSRF via PENS Plugin allows attacker to probe internal networ |
| CVE-2026-33715 | 7.2 HIGH | Chamilo LMS has Unauthenticated SSRF and Open Email Relay via install.ajax.php test_mailer |
| CVE-2026-34602 | 7.1 HIGH | Chamilo LMS: IDOR in /api/course_rel_users Allows Unauthorized Enrollment of Arbitrary Use |
| CVE-2026-34161 | Chamilo LMS: Stored XSS via Malicious File Upload in Social Post Attachments Leads to Arbi | |
| CVE-2026-33714 | Chamilo LMS has Authenticated SQL Injection in statistics.ajax.php users_active action (2. |
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