EUVD-2026-21559
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Lifecycle Timeline
3Tags
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.
Analysis
Privilege escalation in Chamilo LMS versions prior to 1.11.38 allows any authenticated user with a REST API key to elevate their account status from student (status=5) to teacher/course manager (status=1) by manipulating the status field through the update_user_from_username REST API endpoint. This enables unauthorized course creation and management capabilities. …
Sign in for full analysis, threat intelligence, and remediation guidance.
Remediation
Within 24 hours: Audit all Chamilo REST API keys currently issued and identify which users possess active credentials; disable API access for non-administrative accounts if not operationally critical. Within 7 days: Review Chamilo user roles and status values in your database for unauthorized escalations (verify no students have status=1); upgrade to Chamilo LMS 1.11.38 or later if available, or implement the vendor's recommended mitigation controls. …
Sign in for detailed remediation steps.
Priority Score
Share
External POC / Exploit Code
Leaving vuln.today