CVE-2026-33706

HIGH

Chamilo LMS REST API - Student-to-Teacher Privilege Escalation

Title source: manual

Description

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.

References (2)

Core 2

Core References

X_Refsource_Confirm x_refsource_confirm

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

X_Refsource_Misc x_refsource_misc

https://github.com/chamilo/chamilo-lms/commit/0acf8a196307c66c049f97f5ff76cf21c4a08127

View Writeup ZIP pw:eip

Scores

CVSS v3 7.1

EPSS 0.0017

EPSS Percentile 6.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-269

Status published

Products (2)

chamilo/chamilo-lms < 1.11.38

chamilo/chamilo_lms < 1.11.38

Published Apr 10, 2026

Tracked Since Apr 11, 2026