CVE-2026-33141

Chamilo LMS has an IDOR in REST API Stats Endpoint Exposes Any User's Learning Data

State: Published
Severity: 6.5 Medium
Published: Apr 10, 2026
Updated: Apr 14, 2026
Reserved: Mar 17, 2026

Description

Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, an Insecure Direct Object Reference (IDOR) vulnerability in the REST API stats endpoint allows any authenticated user (including low-privilege students with ROLE_USER) to read any other user's learning progress, certificates, and gradebook scores for any course, without enrollment or supervisory relationship. This vulnerability is fixed in 2.0.0-RC.3.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key
CWE-862 Missing Authorization

Affected Products

Product	Versions
chamilo-lmschamilo	< 2.0.0-RC.3Affected

References

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