Please do not report security issues in public issues, discussions or pull requests.
Report them privately through GitHub: Security → Report a vulnerability. Describe the problem, how to reproduce it (for example a crafted video file) and which version you used.
Orbivo is maintained in spare time. You will usually get an answer within two weeks. Once a fix is released, the advisory is published, with credit to you if you want.
Only the latest release receives security fixes.
Orbivo has no network functions: it opens local video, image and settings files and writes logs and recordings. The most likely attack surface is therefore a crafted media file that reaches the FFmpeg demuxers and decoders. Orbivo ships its own FFmpeg build (build/ffmpeg) and updates it when FFmpeg publishes security fixes. Problems inside FFmpeg, Steam Audio or the OpenXR loader should also be reported to those projects; please tell us as well, so we can update.