CVE-2025-64325

EUVD-2025-198099
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9 CRITICAL
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 24%
Affected Products (NVD)
VendorProductVersion
embyemby
𝑥
< 4.8.1.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x
https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x