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.
Published: 2026-10-21
Score: 5.3 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

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Advisories

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History

Wed, 21 Oct 2026 13:00:00 +0000

Type Values Removed Values Added
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.
Title Chamilo LMS 2.0.0-alpha.4 before 2.0.0-RC.3 Missing Authorization via openAnswerGrade
First Time appeared Chamilo
Chamilo chamilo Lms
Weaknesses CWE-639
CPEs cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*
Vendors & Products Chamilo
Chamilo chamilo Lms
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

Chamilo Chamilo Lms
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-21T15:48:42.424Z

Reserved: 2026-10-21T11:46:41.284Z

Link: CVE-2026-114389

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-21T13:18:29.227

Modified: 2026-10-21T16:17:33.330

Link: CVE-2026-114389

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-639

    Authorization Bypass Through User-Controlled Key