Description In Moodle, insufficient capability checks made it possible to remove other users' calendar URL subscriptions. Remediation References CVE-2021-36400 Related Vulnerabilities Drupal Core 4.6.x Security Bypass (4.6.0 - 4.6.5) Jboss EAP Deserialization of Untrusted Data Vulnerability (CVE-2016-4978) Apache Tomcat Permissions, Privileges, and Access Controls Vulnerability (CVE-2014-0096) SharePoint CVE-2019-1201 Vulnerability (CVE-2019-1201) WordPress Plugin WP-ViperGB Cross-Site Scripting (1.3.15) Severity Medium Classification CVE-2021-36400 CWE-639 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Tags Missing Update Known Vulnerabilities