This is a fun, small scale project, but I do take security seriously, but it also has to be related to scope and purpuse of this project.
This project is definitelly not critical infrastructure and is intended to be used as such - for personal sharing of audio files, with low value and low impact if something goes wrong.
For security considerations and recommendations please also check Security section in README.
Definitelly do not use versions older that v15.0.0, these had significant security vulnerability - confidentiality problem related to path relative traversal CWE-23 type of vulnerability.
Considering my limited capacity, I'm including security patches to master branch on best effort basis, and releasing new versions only for critical security fixes
(plus irregularly there are new releases with new functionality).
For such small project I do not expect any CVEs or similar. If there will be really critical security problem I'll put also notice on top of README file.
Just file an issue on github page of this project.
I do not see significant issue with sharing, I doubt such small project will make sense for 0-day attacks. You can also let me know on my email, or note in an issue that you want to use other channel for details.
I try to respond to issues as soon as I can.