CVE-2025-32012 Jellyfin Vulnerable to Denial of Service (DoS) via IP Spoofing
Unauthenticated attackers can spoof IP addresses to bypass LAN restrictions and restart the Jellyfin server, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-32012?
CVE-2025-32012 is a medium-severity authentication bypass vulnerability in jellyfin, published on 15 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-290
Which versions are affected by CVE-2025-32012?
It affects 1 product.
Products include Jellyfin Jellyfin.
How do I fix CVE-2025-32012?
No fix has been published for CVE-2025-32012 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-32012 being exploited?
There is no known exploitation of CVE-2025-32012 in the wild and no public exploit code.
Other vulnerabilities in jellyfin
- CVE-2026-35031 Jellyfin: Potential RCE via subtitle upload path traversal + .strm chain
- CVE-2026-31852 Jellyfin Possible Organization/Secret Compromise from dangerous CI implementation
- CVE-2026-35033 Jellyfin: Potential SSRF + Arbitrary file read via stream argument injection
- CVE-2023-30627 jellyfin-web has a stored cross-site scripting vulnerability in devices.js
- CVE-2023-30626 Jellyfin vulnerable to directory traversal and file write causing arbitrary code execution
Sources
Also known as GHSA-qcmf-gmhm-rfv9.