CVE-2026-47082

Name	CVE-2026-47082
Description	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, regardless of whether the script owner had insert permissions on the destination mailbox.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
cyrus-imapd (PTS)	bullseye	3.2.6-2+deb11u2	vulnerable
	bullseye (security)	3.2.6-2+deb11u4	vulnerable
	bookworm	3.6.1-4+deb12u4	vulnerable
	bookworm (security)	3.6.1-4+deb12u2	vulnerable
	trixie	3.10.2-1	vulnerable
	forky	3.12.2-1	vulnerable
	sid	3.12.3-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
cyrus-imapd	source	(unstable)	3.12.3-1

https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html