Jellyfin up to 10.10.6 Endpoint /System/Restart authentication spoofing

Summaryinfo

A vulnerability, which was classified as critical, was found in Jellyfin up to 10.10.6. The affected element is an unknown function of the file /System/Restart of the component Endpoint. Such manipulation leads to authentication spoofing. This vulnerability is listed as CVE-2025-32012. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Jellyfin up to 10.10.6. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /System/Restart of the component Endpoint. The manipulation with an unknown input leads to a authentication spoofing vulnerability. Using CWE to declare the problem leads to CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. Impacted is availability. CVE summarizes:

Jellyfin is an open source self hosted media server. In versions 10.9.0 to before 10.10.7, the /System/Restart endpoint provides administrators the ability to restart their Jellyfin server. This endpoint is intended to be admins-only, but it also authorizes requests from any device in the same local network as the Jellyfin server. Due to the method Jellyfin uses to determine the source IP of a request, an unauthenticated attacker is able to spoof their IP to appear as a LAN IP, allowing them to restart the Jellyfin server process without authentication. This means that an unauthenticated attacker could mount a denial-of-service attack on any default-configured Jellyfin server by simply sending the same spoofed request every few seconds to restart the server over and over. This method of IP spoofing also bypasses some security mechanisms, cause a denial-of-service attack, and possible bypass the admin restart requirement if combined with remote code execution. This issue is patched in version 10.10.7.

The advisory is available at github.com. This vulnerability is handled as CVE-2025-32012 since 04/01/2025. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 10.10.7 eliminates this vulnerability.

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Productinfo

Name

• Jellyfin

Version

• 10.10.0
• 10.10.1
• 10.10.2
• 10.10.3
• 10.10.4
• 10.10.5
• 10.10.6

Website

• Product: https://github.com/jellyfin/jellyfin/

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