# Cyrus IMAP 2.5.5 Release Notes

Important

This is a bug-fix release in the stable 2.5 series.

Refer to the Cyrus IMAP 2.5.0 Release Notes for important information about the 2.5 series, including upgrading instructions.

Download from GitHub:

> - https://github.com/cyrusimap/cyrus-imapd/releases/download/cyrus-imapd-2.5.5/cyrus-imapd-2.5.5.tar.gz

> - https://github.com/cyrusimap/cyrus-imapd/releases/download/cyrus-imapd-2.5.5/cyrus-imapd-2.5.5.tar.gz.sig

## Changes Since 2.5.4

### Bug fixes

- Security fix: compiling with `--enable-autocreate` no longer allows arbitrary mailbox creation

- Fixed task 207: don't segfault on mboxutil -d of MBTYPE_DELETED mailboxes (thanks Chris Stromsoe)

- Fixed lock management over rename (thanks Thomas Jarosch)

- Miscellaneous other fixes (thanks Thomas Jarosch)