CVE-2026-33706 PUBLISHED

Chamilo LMS has a REST API Self-Privilege Escalation (Student → Teacher)

Assigner: GitHub_M
Reserved: 23.03.2026 Published: 10.04.2026 Updated: 10.04.2026

Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user with a REST API key can modify their own status field via the update_user_from_username endpoint. A student (status=5) can change their status to Teacher/CourseManager (status=1), gaining course creation and management privileges. This vulnerability is fixed in 1.11.38.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CVSS Score: 7.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	chamilo
Product	chamilo-lms
Versions	Version < 1.11.38 is affected

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-3gqc-xr75-pcpw
https://github.com/chamilo/chamilo-lms/commit/0acf8a196307c66c049f97f5ff76cf21c4a08127

Problem Types

CWE-269: Improper Privilege Management CWE