CVE-2023-33193
CriticalCVSS 9.1Exploitation Probability (EPSS)
Elevated risk74th percentile - higher than 74% of all known CVEs
Summary
A vulnerability in Emby Server may allow administrative access to the system, depending on user account settings. An attacker could spoof headers, enabling passwordless login or viewing a list of user accounts that may not have a password configured.
Risk Assessment
Organizations may be exposed to unauthorized access to the Emby Server system, potentially leading to data leaks or unauthorized media management. This particularly affects publicly accessible systems with improperly configured login settings.
Recommendation
It is recommended to update to Emby Server Beta version 4.8.31 or version 4.7.12, and to tighten login configurations for administrative users to minimize risk.
Other vulnerabilities in Emby Server
See all- CVE-2025-64325Critical
Emby Server prior to version 4.8.1.0 and prior to Beta version 4.9.0.0-beta allows a malicious user to send an authentication request with a manipulated X-Emby-Client value, which gets added to the devices section of the admin dashboard without sanitization.
- CVE-2021-25827Critical
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.
- CVE-2021-25828Medium
Emby Server versions < 4.6.0.50 is vulnerable to Cross Site Scripting (XSS) vulnerability via a crafted GET request to /web. The vulnerability may allow an attacker to inject malicious script.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS