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Sharing Jellyfin (poptalk.scrubbles.tech)
submitted 1 year ago by scrubbles@poptalk.scrubbles.tech to c/selfhosted@lemmy.world
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Hi folks. So, I know due to a myriad of reasons I should not allow Jellyfin access to the open internet. However, in trying to switch family over from Plex, I'll need something that "just works".

How are people solving this problem? I've thought about a few solutions, like whitelisting ips (which can change of course), or setting up VPN or tail scale (but then that is more work than they will be willing to do on their side). I can even add some level of auth into my reverse proxy, but that would break Jellyfin clients.

Wondering what others have thought about for this problem

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[-] skankhunt42@lemmy.ca 2 points 1 year ago

Hang on, why not open the port to jellyfin to the internet?

I have a lifetime Plex pass so its not urgent but I have a containers running emby and jellyfin to check them out. When I decide which one I planned to open it up and give people logins.

[-] Selfhoster1728@infosec.pub 11 points 1 year ago* (last edited 1 year ago)

See this issue on their github repo: here

Basically from what I understand there's loads of unauthenticated api calls, so someone can very easily exploit that.

If they just supported mTLS in their clients it wouldn't be an issue but oh well :(

[-] exu@feditown.com 4 points 1 year ago

The main unauthenticated action is video streaming, but an attacker would need to guess the correct id by chance.

https://github.com/jellyfin/jellyfin/issues/5415#issuecomment-2825240290

[-] MaggiWuerze@feddit.org 3 points 1 year ago

It's not chance if the I'd is based on the path to your media. There's but that much variation in the path to a certain movie and its trivial to build a rainbow table to try them out. This way unauthenticated users can not only stream from your server but effectively map your library

[-] possiblylinux127@lemmy.zip 1 points 1 year ago

That wouldn't even be using TLS

Bad idea

this post was submitted on 25 Apr 2025
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