In Dovecot before 2.3.11.3, uncontrolled recursion in submission, lmtp, and lda allows remote attackers to cause a denial of service (resource consumption) via a crafted e-mail message with deeply nested MIME parts.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-12100.json"