Vulnerabilities > CVE-2021-36539 - Authorization Bypass Through User-Controlled Key vulnerability in Instructure Canvas Learning Management Service 20200729
Attack vector
NETWORK Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
NONE Availability impact
NONE Summary
Instructure Canvas LMS didn't properly deny access to locked/unpublished files when the unprivileged user access the DocViewer based file preview URL (canvadoc_session_url).
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 1 |