What is CVE-2026-47089?

CVE-2026-47089 is a medium-severity vulnerability in Cyrusimap Cyrus Imap, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-07-16.

How severe is CVE-2026-47089?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Cyrusimap Cyrus Imap

CVE-2026-47089

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.)

Vulnerability class: Broken Access Control

EPSS: 0.003 (20.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Cyrusimap Cyrus Imap — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-47089?: CVE-2026-47089 is a medium-severity vulnerability in Cyrusimap Cyrus Imap, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-07-16.
How severe is CVE-2026-47089?: Medium severity. CVSS v3 base score is 4.3 out of 10.