CVE-2026-47083

Name	CVE-2026-47083
Description	An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an ESEARCH cross-user content oracle. By using the ESEARCH command, an authenticated IMAP user could enumerate folder names under any account they could name. Search would return UIDs of messages matching the search, creating a content oracle (without allowing arbitrary reads of the target's content).
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)	bookworm	3.6.1-4+deb12u4	vulnerable
	bookworm (security)	3.6.1-4+deb12u5	vulnerable
	trixie	3.10.2-1+deb13u2	fixed
	forky, sid	3.12.4-1	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	trixie	3.10.2-1+deb13u2
cyrus-imapd	source	(unstable)	3.12.3-1

[bookworm] - cyrus-imapd <postponed> (Will be fixed via point release)
https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html