Description
Chamilo LMS from 2.0.0-alpha.4 before 2.0.0-RC.3 contains a missing authorization vulnerability in AiController::openAnswerGrade that allows any authenticated user to obtain AI grading of other students' exam attempts. Attackers can enumerate exeId and questionId values sent to the open_answer_grade endpoint to expose other students' answers through feedback and consume AI quota.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| chamilo | chamilo-lms | 2.0.0-alpha.4 – < 2.0.0-RC.3 | 2.0.0-RC.3 |
References
- https://github.com/chamilo/chamilo-lms/issues/7671 issue-tracking
- https://github.com/chamilo/chamilo-lms/commit/2861afd4896ff898a950302f2c00f44726fa6f0a patch
- chamilo-lms v2.0.0-RC.3 Release Notes release-notes
- https://github.com/chamilo/chamilo-lms/blob/v2.0.0-RC.2/src/CoreBundle/Controller/AiController.php#L525-L703 technical-description
- VulnCheck Advisory: Chamilo LMS 2.0.0-alpha.4 before 2.0.0-RC.3 Missing Authorization via openAnswerGrade third-party-advisory