Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, an insecure direct object modification vulnerability in the PUT /api/users/{id} endpoint allows any authenticated user with ROLE_STUDENT to escalate their privileges to ROLE_ADMIN by modifying the roles field on their own user record. The API Platform security expression is_granted('EDIT', object) only verifies record ownership, and the roles field is included in the writable serialization group, enabling any user to set arbitrary roles such as ROLE_ADMIN. Successful exploitation grants full administrative control of the platform, including access to all courses, user data, grades, and administrative settings. This issue has been fixed in version 2.0.0-RC.3.
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Affected Vendors & Products
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History
Wed, 15 Apr 2026 15:15:00 +0000
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ssvc
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Wed, 15 Apr 2026 14:00:00 +0000
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Chamilo
Chamilo chamilo Lms |
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Chamilo
Chamilo chamilo Lms |
Tue, 14 Apr 2026 22:00:00 +0000
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| Description | Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, an insecure direct object modification vulnerability in the PUT /api/users/{id} endpoint allows any authenticated user with ROLE_STUDENT to escalate their privileges to ROLE_ADMIN by modifying the roles field on their own user record. The API Platform security expression is_granted('EDIT', object) only verifies record ownership, and the roles field is included in the writable serialization group, enabling any user to set arbitrary roles such as ROLE_ADMIN. Successful exploitation grants full administrative control of the platform, including access to all courses, user data, grades, and administrative settings. This issue has been fixed in version 2.0.0-RC.3. | |
| Title | Chamilo LMS has Privilege Escalation via API User Role Modification | |
| Weaknesses | CWE-269 CWE-863 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-04-14T21:37:55.490Z
Updated: 2026-04-15T14:24:29.902Z
Reserved: 2026-04-10T20:22:44.035Z
Link: CVE-2026-40291
Updated: 2026-04-15T14:24:26.077Z
Status : Received
Published: 2026-04-14T22:16:32.507
Modified: 2026-04-14T22:16:32.507
Link: CVE-2026-40291
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