CVE-2026-33702— Chamilo LMS has an Insecure Direct Object Reference (IDOR)
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I. Basic Information for CVE-2026-33702
Vulnerability Information
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Vulnerability Title
Chamilo LMS has an Insecure Direct Object Reference (IDOR)
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
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 1.11.38之前版本和2.0.0-RC.3之前版本存在安全漏洞，该漏洞源于学习路径进度保存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覆盖其他用户的学习路径进度。
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 | < 1.11.38 | - |
II. Public POCs for CVE-2026-33702
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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-2026-33710 | 7.5 HIGH | Chamilo LMS has Weak REST API Key Generation (Predictable) |
| CVE-2026-31940 | 7.5 HIGH | Session Fixation 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-2026-32894 | 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-2026-32930 | 7.1 HIGH | Chamilo LMS has an IDOR in Gradebook Allows Cross-Course Evaluation Edit Without Ownership |
| CVE-2026-33708 | 6.5 MEDIUM | Chamilo LMS has REST API PII Exposure via get_user_info_from_username |
| CVE-2026-33736 | 6.5 MEDIUM | Chamilo LMS has an Insecure Direct Object Reference (IDOR) - User Data Exposure |
| CVE-2026-33141 | 6.5 MEDIUM | Chamilo LMS has an IDOR in REST API Stats Endpoint Exposes Any User's Learning Data |
| 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 |
| CVE-2025-66447 | Chamilo LMS has validation-less redirect on login page |
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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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
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