We released Exim 4.90.1 just now.
---------------------------------

This is mainly a security release to fix CVE-2018-6789, a buffer
overflow in base64d(). Please update your systems to 4.90.1. The
reporter of the bug claims to have a working exploit. See
http://exim.org/static/doc/security/CVE-2018-6789.txt for the timeline.

Timeline (UTC)
--------------

* 2018-02-05 Report from Meh Chang <meh> via exim-security mailing list
* 2018-02-06 Request CVE on https://cveform.mitre.org/ (heiko)
             CVE-2018-6789
* 2018-02-07 Announcement to the public via exim-users, exim-maintainers
             mailing lists and on oss-security mailing list
* 2018-02-08 16:50 Grant restricted access to the security repo for
             distro maintainers
* 2018-02-09 One distro breaks the embargo
* 2018-02-10 18:00 Grant public access to the our official git repo.