Only the latest release receives fixes.

EngineLab is a desktop application that reads engine, calibration, script and audio files. A file that crashes the application or makes it read or write outside its folder is worth reporting.

Please do not open a public issue for a vulnerability. Use GitHub's private reporting instead: Security → Report a vulnerability on the repository page. You will get an answer as soon as possible, and the fix will be released before the details are made public.