This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-47081 →

DEBIAN-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 authent...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 cyrus-imapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.1-4+deb12u5"}]}]

Debian:13 cyrus-imapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.2-1+deb13u2"}]}]

Debian:14 cyrus-imapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12.3-1"}]}]

References

advisory security-tracker.debian.org