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,...

CVE-2026-47082

CVE-2026-47082 affects Cyrus IMAP (cyrus-imapd) up to version 3.12.2. The vacation Sieve option :fcc ignores destination mailbox ACLs, allowing a user’s vacation auto-replies to be delivered to any mailbox named by the script, even if the user lacks insert permissions on that mailbox. The issue i...