EUVD-2026-45005

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The vacation "fcc" feature skips the destination-mailbox ACL. A user whose vacation Sieve script used :fcc to save a copy of the sent message could deliver vacation auto-reply copies into any mailbox the script could name,...

UBUNTU-CVE-2026-47082

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The vacation "fcc" feature skips the destination-mailbox ACL. A user whose vacation Sieve script used :fcc to save a copy of the sent message could deliver vacation auto-reply copies into any mailbox the script could name,...

PT-2026-60550

Name of the Vulnerable Software and Affected Versions Cyrus IMAP versions prior to 3.12.3 Description An issue exists in the vacation "fcc" feature of cyrus-imapd. This feature, used to save a copy of a sent message via a Sieve script, fails to check the destination-mailbox Access Control List AC...

Privilege Escalation

dovecot is vulnerable to privilege escalation. A flaw was found in the Dovecot ACL plug-in. User with only insert permissions for a mailbox could use the "COPY" and "APPEND" commands to set additional message flags...