A flaw was found in Moodle before versions 3.7, 3.6.4. A web service fetching messages was not restricted to the current user's conversations.
{ "versions": [ { "introduced": "0" }, { "fixed": "3.6.4" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-10154.json"