CVE-2026-33703— Chamilo LMS Critical IDOR: Any Authenticated User Can Extract All Users’ Personal Data and API Tokens
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I. Basic Information for CVE-2026-33703
Vulnerability Information
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Vulnerability Title
Chamilo LMS Critical IDOR: Any Authenticated User Can Extract All Users’ Personal Data and API Tokens
Source: NVD (National Vulnerability Database)
Vulnerability Description
Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, an Insecure Direct Object Reference (IDOR) vulnerability in the /social-network/personal-data/{userId} endpoint allows any authenticated user to access full personal data and API tokens of arbitrary users by modifying the userId parameter. This results in mass disclosure of sensitive user information and credentials, enabling a full platform data breach. This vulnerability is fixed in 2.0.0-RC.3.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
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/social-network/personal-data/{userId}端点存在不安全的直接对象引用，可能导致任何经过身份验证的用户访问任意用户的完整个人数据和API令牌。
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-2026-33703
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|---|
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Same Patch Batch · chamilo · 2026-04-10 · 23 CVEs total
| CVE-2026-33707 | 9.4 CRITICAL | Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms |
| CVE-2026-32892 | 9.1 CRITICAL | OS Command Injection in Chamilo LMS 1.11.36 |
| CVE-2026-33618 | 8.8 HIGH | Chamilo LMS Affected by Remote Code Execution via eval() in Platform Settings |
| CVE-2026-31939 | 8.3 HIGH | Path Traversal (Arbitrary File Delete) in Chamilo LMS |
| CVE-2026-31941 | 7.7 HIGH | Server-Side Request Forgery (SSRF) in Chamilo LMS |
| CVE-2026-32931 | 7.5 HIGH | Chamilo LMS has Arbitrary File Upload via MIME-Only Validation in Exercise Sound Upload Le |
| CVE-2026-31940 | 7.5 HIGH | Session Fixation in Chamilo LMS |
| CVE-2026-33710 | 7.5 HIGH | Chamilo LMS has Weak REST API Key Generation (Predictable) |
| CVE-2026-32930 | 7.1 HIGH | Chamilo LMS has an IDOR in Gradebook Allows Cross-Course Evaluation Edit Without Ownership |
| CVE-2026-32894 | 7.1 HIGH | Chamilo LMS has an IDOR in Gradebook Allows Cross-Course Deletion of Any Student's Grade R |
| CVE-2026-33706 | 7.1 HIGH | Chamilo LMS has a REST API Self-Privilege Escalation (Student → Teacher) |
| CVE-2026-33704 | 7.1 HIGH | Chamilo LMS Affected by Authenticated Arbitrary File Write via BigUpload endpoint |
| CVE-2026-33702 | 7.1 HIGH | Chamilo LMS has an Insecure Direct Object Reference (IDOR) |
| CVE-2026-33708 | 6.5 MEDIUM | Chamilo LMS has REST API PII Exposure via get_user_info_from_username |
| CVE-2026-33141 | 6.5 MEDIUM | Chamilo LMS has an IDOR in REST API Stats Endpoint Exposes Any User's Learning Data |
| CVE-2026-33736 | 6.5 MEDIUM | Chamilo LMS has an Insecure Direct Object Reference (IDOR) - User Data Exposure |
| CVE-2026-32893 | 5.4 MEDIUM | Chamilo LMS has Reflected XSS via Unsanitized http_build_query() in Exercise Question List |
| CVE-2026-33705 | 5.3 MEDIUM | Chamilo LMS has unauthenticated access to Twig template source files exposes application l |
| CVE-2026-33737 | 5.3 MEDIUM | Chamilo LMS has an XML External Entity (XXE) Injection |
| CVE-2026-32932 | 4.7 MEDIUM | Chamilo LMS has an Open Redirect via Unvalidated 'page' Parameter in Session Course Edit |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: chamilo-lms
- CVE-2026-40291
Chamilo LMS has Privilege Escalation via API User Role Modif - CVE-2026-35196
Chamilo LMS has OS Command Injection via export_all_certific - CVE-2026-34602
Chamilo LMS: IDOR in /api/course_rel_users Allows Unauthoriz - CVE-2026-34370
Chamilo LMS: IDOR in the Notebook Module allows an attacker - CVE-2026-34161
Chamilo LMS: Stored XSS via Malicious File Upload in Social
Same vendor: chamilo
- CVE-2026-40291
Chamilo LMS has Privilege Escalation via API User Role Modif - CVE-2026-35196
Chamilo LMS has OS Command Injection via export_all_certific - CVE-2026-34602
Chamilo LMS: IDOR in /api/course_rel_users Allows Unauthoriz - CVE-2026-34370
Chamilo LMS: IDOR in the Notebook Module allows an attacker - CVE-2026-34161
Chamilo LMS: Stored XSS via Malicious File Upload in Social
Same weakness: CWE-639
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JeecgBoot mLogin Endpoint LoginController.java authorization - CVE-2026-42291
SysReptor: Read-write access to personal notes by sharing-li - CVE-2026-44400
MailEnable Enterprise Premium < 10.55 Authorization Bypass v - CVE-2026-42279
solidtime: Time entry update endpoint allows cross-organizat - CVE-2026-42277
Onyx: IDOR in /chat/file/{file_id} allows any authenticated
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