The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-11356.json"