Jellyfin prior to 10.7.0 Unauthenticated Arbitrary File Read

Jellyfin is a media system that runs on free software. With some endpoints in Jellyfin prior to version 10.7.1, well-crafted requests will allow arbitrary files to be read from a Jellyfin server’s file system. When Windows is used as the host operating system, this problem is more common. Servers that are connected to the Internet are potentially vulnerable.This has been addressed in version 10.7.1. Users may be able to restrict some access as a workaround by applying rigorous security permissions on their filesystem, but it is strongly advised that they upgrade as soon as possible.

Mitigation / Precaution

In order to patch this vulnerability, please install the official patch Jellyfin made available for supported, vulnerable instances.

Written by

Rejah Rehim

Co-founder, Director

Rejah brings more than 12 years of industry experience in Information Technology. He is a fervent security enthusiast and serves as a Project Leader at OWASP Foundation, and Commander (Hon.) at Kerala Police. He has authored two books titled “Effective Python Penetration Testing” and “Python Penetration Testing Cookbook” and is the creator of 9 Mozilla add-ons.