Hope, Seblod will be compatible :-S
A Joomla 3.4.5 release containing a security fix will be published on Thursday 22nd October at approximately 14:00 UTC
The Joomla security team (JSST) has been informed of a critical security issue in the Joomla core.
Since this is a very important security fix, please be prepared to update your Joomla installations next Thursday.
Until the release is out, please understand that we cannot provide any further information.
https://www.joomla.org/announcements/release-news/5633-important-security-announcement-pre-release.html