Emby Server allows attackers to gain administrative server access without preconditions

Emby Server is a user-installable home media server. Versions below 4.9.1.81 allow 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. This issue is fixed in version 4.9.1.81.

Emby Server is Vulnerable to Remote Code Execution Through XSS in Admin Dashboard

Emby Server is a personal media server. Prior to version 4.8.1.0 and prior to Beta version 4.9.0.0-beta, a malicious user can send an authentication request with a manipulated X-Emby-Client value, which gets added to the devices section of the admin dashboard without sanitization. This issue has been patched in version 4.8.1.0 and Beta version 4.9.0.0-beta.

In Emby Server 4.6.7.0, the playlist name field is vulnerable to XSS stored where it is possible to steal the administrator access token and flip or steal the media server administrator account.

Emby Server < 4.7.12.0 is vulnerable to a login bypass attack by setting the X-Forwarded-For header to a local IP-address.

Emby Server Proxy Header Spoofing Vulnerability

Emby Server is a user-installable home media server which stores and organizes a user's media files of virtually any format and makes them available for viewing at home and abroad on a broad range of client devices. This vulnerability may allow administrative access to an Emby Server system, depending on certain user account settings. By spoofing certain headers which are intended for interoperation with reverse proxy servers, it may be possible to affect the local/non-local network determination to allow logging in without password or to view a list of user accounts which may have no password configured. Impacted are all Emby Server system which are publicly accessible and where the administrator hasn't tightened the account login configuration for administrative users. This issue has been patched in Emby Server Beta version 4.8.31 and Emby Server version 4.7.12.

Emby Server versions < 4.6.0.50 is vulnerable to Cross Site Scripting (XSS) vulnerability via a crafted GET request to /web.

Media Browser Emby Server cross site scripting

A vulnerability was found in Media Browser Emby Server 4.7.13.0 and classified as problematic. This issue affects some unknown processing of the file /web/. The manipulation leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-236183.

Unauthenticated file read in Emby Server

Emby Server is a personal media server with apps on many devices. In Emby Server on Windows there is a set of arbitrary file read vulnerabilities. This vulnerability is known to exist in version 4.6.4.0 and may not be patched in later versions. Known vulnerable routes are /Videos/Id/hls/PlaylistId/SegmentId.SegmentContainer, /Images/Ratings/theme/name and /Images/MediaInfo/theme/name. For more details including proof of concept code, refer to the referenced GHSL-2021-051. This issue may lead to unauthorized access to the system especially when Emby Server is configured to be accessible from the Internet.

Emby Server before 4.5.0 allows SSRF via the Items/RemoteSearch/Image ImageURL parameter.