What is CVE-2026-47081?

CVE-2026-47081 is a low-severity vulnerability in Cyrusimap Cyrus Imap, classified under Incorrect Authorization. CVSS score: 3.1/10. Published 2026-07-16.

How severe is CVE-2026-47081?

Low severity. CVSS v3 base score is 3.1 out of 10.

Auth bypass in Cyrusimap Cyrus Imap

CVE-2026-47081

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a "mailbox has changed" notice would be pushed when the mailbox modseq changed.

Vulnerability class: Broken Access Control

EPSS: 0.002 (15.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Cyrusimap Cyrus Imap — versions 0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

Frequently asked questions

What is CVE-2026-47081?: CVE-2026-47081 is a low-severity vulnerability in Cyrusimap Cyrus Imap, classified under Incorrect Authorization. CVSS score: 3.1/10. Published 2026-07-16.
How severe is CVE-2026-47081?: Low severity. CVSS v3 base score is 3.1 out of 10.