Early Access — Mondoo Vulnerability Intelligence is currently in preview.
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.
Exploitability
AC:LAV:NPR:LUI:NScope
S:UImpact
A:LC:NI:N4.3/CVSS:3.1/AC:L/AV:N/A:L/C:N/I:N/PR:L/S:U/UI:N