Description In Moodle, insufficient capability checks made it possible to remove other users' calendar URL subscriptions. Remediation References CVE-2021-36400 Related Vulnerabilities TYPO3 Session Fixation Vulnerability (CVE-2010-3671) Roundcube Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2017-6820) WordPress Plugin PIKLIST-Rapid development framework Cross-Site Scripting (0.9.4.25) IBM WebSEAL CVE-2019-4145 Vulnerability (CVE-2019-4145) Atlassian Jira Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2017-18100) Severity Medium Classification CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Tags Missing Update Known Vulnerabilities CWE-639 CVE-2021-36400