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GHSA-95fv-5gfj-2r84
No affected components available
Withdrawn Advisory
This advisory has been withdrawn because it incorrectly listed MediaBrowser.Server.Core as vulnerable. CVE-2025-64113 affects Emby Server versions 4.9.1.80 and prior, and Emby Server Beta versions 4.9.2.6 and prior.
Original Description
Impact
This vulnerability affects all Emby Server versions - beta and stable up to the specified versions. It allows an attacker to gain full administrative access to an Emby Server (for Emby Server administration, not at the OS level,). Other than network access, no specific preconditions need to be fulfilled for a server to be vulnerable.
Patches
Quick Fix
A quick fix will be rolled out via an update to one of the default-included Emby Server plugins. This way is chosen because many users are updating their servers manually while plugin updates are typically configured to be applied automatically. This allows to get a patch deployed to a large amount of servers within a single day.
Server Patches
Patched versions for both, Emby Server stable and Emby Server beta are available now.
All Emby Server owners are strongly encouraged to apply those updates as soon as possible.
Workarounds
[!NOTE] These workarounds are OBSOLETE now. Please update Emby Server instead!
As and immediate remedy, it is possible to set restricted file system permissions on the passwordreset.txt file in the configuration folder of Emby Server. If it doesn't exist, users can create the file themselves or just call the ForgotPassword API once, which will create the file.
On Windows, users can set DENY permissions for "Authenticated users" and on Linux, permissions can be set via sudo chmod 444 passwordreset.txt.
This will make the API request fail, which completely eliminates the vulnerability.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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