Hello Mike, the current 5.0 or 5.0r1 we have in tree suffers from a 'global buffer overflow read' fixed here: https://github.com/vapier/ncompress/commit/9eb66df69e8b0281a4a43819f570c3a6d55b1806 I have verified that git version no longer has this problem, would you mind make a new release?
Re-assigning this to vapier as the upstream maintainer.
please post these to the upstream GH project