RomM is a self-hosted rom manager and player. Versions prior to 3.10.3 and 4.0.0-beta.3 have an authenticated path traversal vulnerability in the `/api/raw` endpoint. Anyone running the latest version of RomM and has multiple users, even unprivileged users, such as the kiosk user in the official implementation, may be affected. This allows the leakage of passwords and users that may be stored on the system. Versions 3.10.3 and 4.0.0-beta.3 contain a patch.
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "/dir/../filename" sequences that can resolve to a location that is outside of that directory.