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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x Exploit, Vendor Advisory
- https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.4 · embyNVD modified 2026-10-18 20:10
Affected (CPE criteria) 1
cpe:2.3:a:emby:emby:*:*:*:*:*:*:*:*
References 2
- https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x Exploit, Vendor Advisory
- https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x Exploit, Vendor Advisory