this post was submitted on 01 Apr 2026
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Selfhosted

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Jellyfin critical security update - This is not a joke (github.com)
submitted 2 months ago by Mubelotix@jlai.lu to c/selfhosted@lemmy.world
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[–] varnia@lemmy.blahaj.zone 28 points 2 months ago (2 children)

There is a good reason I only have Jellyfin and other services accessible via valid Client Certificate.

[–] daniskarma@lemmy.dbzer0.com 8 points 2 months ago (1 children)

Does it work with android and TV apps?

I tried long ago and failed.

[–] varnia@lemmy.blahaj.zone 14 points 2 months ago* (last edited 2 months ago) (1 children)

No, we only use Jellyfin via browser. Unfortunately even with imported Client Cert, Android apps won't work.

Edit: Client Certs need to be implemented per App. There is a feature request from 2022 https://features.jellyfin.org/posts/1461/capability-to-specify-client-certificate-for-android-client

[–] sudoMakeUser@sh.itjust.works 2 points 2 months ago (1 children)

Also interested how this works for mobile apps. I self host a number of services through caddy as my reverse proxy but each application is just dependent on it's own authentication. If I exposed all my services to the internet, that's a huge attack vector. If anyone else has some ideas I'd be happy to listen.

[–] daniskarma@lemmy.dbzer0.com 2 points 2 months ago

If you are the only user and don't need to use those apps in devices you don't own a vpn is the way to go.

If not. Depending the number of users you could do some heavy ip geoblocking to at least reduce the exposed surface.

There are a few services I have just like 3 IPs allowed to get a response from caddy, any other ip gets 403 error.