NGINX Unit before 1.7.1 might allow an attacker to cause a heap-based buffer overflow in the router process with a specially crafted request. This may result in a denial of service (router process crash) or possibly have unspecified other impact.
http://www.securityfocus.com/bid/106956
http://unit.nginx.org/CHANGES.txt
http://mailman.nginx.org/pipermail/unit/2019-February/000113.html