CVE-2023-48702: Jellyfin

High severity, CVSS 7.2. EPSS: 1.2% chance of exploitation in the next 30 days.

Jellyfin is a system for managing and streaming media. Prior to version 10.8.13, the `/System/MediaEncoder/Path` endpoint executes an arbitrary file using `ProcessStartInfo` via the `ValidateVersion` function. A malicious administrator can setup a network share and supply a UNC path to `/System/MediaEncoder/Path` which points to an executable on the network share, causing Jellyfin server to run the executable in the local context. The endpoint was removed in version 10.8.13.

Affected products

• Jellyfin Jellyfin: before 10.8.13 (fixed in 10.8.13)

Published 2023-12-13. Last modified 2026-06-17.