An issue was discovered in Mattermost Server before 5.18.0. It allows attackers to cause a denial of service (memory consumption) via a large Slack import.
{ "versions": [ { "introduced": "0" }, { "fixed": "5.18.0" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20845.json"