Emby Server prior 4.8.1.0/4.9.0.0-beta X-Emby-Client cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Emby Server. It has been classified as problematic. The impacted element is an unknown function. This manipulation of the argument X-Emby-Client causes cross site scripting. This vulnerability is handled as CVE-2025-64325. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in Emby Server. Affected by this vulnerability is an unknown code block. The manipulation of the argument X-Emby-Client with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-64325 since 10/30/2025. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 4.8.1.0 or 4.9.0.0-beta eliminates this vulnerability.

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Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.0
NVD Vector: 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Server 4.8.1.0/4.9.0.0-beta

Timelineinfo

10/30/2025 CVE reserved
11/19/2025 +20 days Advisory disclosed
11/19/2025 +0 days VulDB entry created
01/16/2026 +57 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-2gwc-988r-2r7x
Status: Confirmed

CVE: CVE-2025-64325 (🔒)
GCVE (CVE): GCVE-0-2025-64325
GCVE (VulDB): GCVE-100-332911

Entryinfo

Created: 11/19/2025 07:30
Updated: 01/16/2026 00:44
Changes: 11/19/2025 07:30 (67), 01/16/2026 00:44 (11)
Complete: 🔍
Cache ID: 216::103

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