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Vulnerability record · CVE-2025-64325 · published 18 November 2025

CVE-2025-64325: Emby cross-site scripting vulnerability

Emby · Emby

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.

8.4 CVSS 4.0 High EPSS 0.42% · top 66.5% CWE-79 · Cross-site scriptingCWE-116 · CWE-116
8.4CVSS 4.0 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x ExploitVendor Advisory
https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-64325), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.