Vulnerability Information
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Vulnerability Title
Chamilo LMS: IDOR in /api/course_rel_users Allows Unauthorized Enrollment of Arbitrary Users into Courses
Vulnerability Description
Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the /api/course_rel_users endpoint is vulnerable to Insecure Direct Object Reference (IDOR), allowing an authenticated attacker to modify the user parameter in the request body to enroll any arbitrary user into any course without proper authorization checks. The backend trusts the user-supplied input for the user field and performs no server-side verification that the requester owns the referenced user ID or has permission to act on behalf of other users. This enables unauthorized manipulation of user-course relationships, potentially granting unintended access to course materials, bypassing enrollment controls, and compromising platform integrity. This issue has been fixed in version 2.0.0-RC.3.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Vulnerability Type
通过用户控制密钥绕过授权机制
Vulnerability Title
Chamilo LMS 安全漏洞
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/api/course_rel_users端点存在不安全的直接对象引用漏洞，可能导致经过身份验证的攻击者修改请求体中的用户参数，在未经适当授权检查的情况下将任意用户注册到任何课程中。
CVSS Information
N/A
Vulnerability Type
N/A