:tocdepth: 3

==============================
Cyrus IMAP 3.4.1 Release Notes
==============================

Download from GitHub:

    *   https://github.com/cyrusimap/cyrus-imapd/releases/download/cyrus-imapd-3.4.1/cyrus-imapd-3.4.1.tar.gz
    *   https://github.com/cyrusimap/cyrus-imapd/releases/download/cyrus-imapd-3.4.1/cyrus-imapd-3.4.1.tar.gz.sig

.. _relnotes-3.4.1-changes:

Changes since 3.4.0
===================

Security fixes:
---------------

* Fixed :cve:`CVE-2021-32056`: Remote authenticated users could bypass intended
  access restrictions on certain server annotations.  Additionally, a
  long-standing bug in replication did not allow server annotations to be
  replicated.  Combining these two bugs, a remote authenticated user could
  stall replication, requiring administrator intervention.

Build changes
-------------

* Fixed :issue:`3462`: using GLIBC-only macro to check for GCC features
  (thanks Andy Fiddaman)

Bug fixes
---------

* Fixed :issue:`3456`: per-server annotations were unable to replicate
* Fixed :issue:`3468`: `ctl_cyrusdb -r` assertion on startup when mboxlist_db
  configured to "skiplist" (thanks Felix J. Ogris)
* Fixed: JMAP email updates must result in non-empty mailboxIds
* Fixed: output JMAP dates as Dates, not UTCDates

Fixes to nonstandard JMAP extensions
------------------------------------

(These extensions are not yet formally standardised, and are only available
with the `jmap_nonstandard_extensions` :cyrusman:`imapd.conf(5)` option
enabled.)

* Fixed: JMAP Calendars Extension - gracefully handle empty property values
* Fixed: JMAP Calendars Extension - ignore empty string default values in
  events
* Fixed: JMAP Calendars Extension - do not use Participant.email for scheduling
