Is CVE-2026-47089 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-47089?

CVE-2026-47089 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-47089

Description

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. LISTRIGHTS os not limited to users with admin access. An authenticated user could call IMAP LISTRIGHTS against any mailbox they could name and learn what principals had what access to it. (This action should have been restricted to users with admin access on the target mailbox.)