The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension.
{ "versions": [ { "introduced": "0" }, { "fixed": "2.3.15" } ] }
[ { "events": [ { "introduced": "0" }, { "last_affected": "33" } ] }, { "events": [ { "introduced": "0" }, { "last_affected": "34" } ] } ]
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-28200.json"