Sphinx Technologies Sphinx 3.1.1 by default has no authentication and listens on 0.0.0.0, making it exposed to the internet (unless filtered by a firewall or reconfigured to listen to 127.0.0.1 only).
sphinxsearch.com/docs/sphinx3.html#getting-started-on-linux-and-macos
blog.wirhabenstil.de/2019/08/19/sphinxsearch-0-0-0-09306-cve-2019-14511/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3FPPNZZMWTZOMFGFETMET6YKIH2DQDKS/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XD25JJJVM7FFXAO2L3ZG2KXQ6UMFBIA4/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YSLPW44RWIGHU5AG3P4U2HPSD3UBG4GJ/
sphinxsearch.com/blog/