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CVE-2025-31499— Jellyfin Vulnerable to Argument Injection in FFmpeg

Quick assessment

Affected
jellyfin jellyfin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Jellyfin是Jellyfin开源的一个免费软件媒体系统。可让您控制媒体的管理和流式传输。它是专有Emby和Plex的替代产品，可以通过多个应用程序将专用服务器中的媒体提供给最终用户设备。 Jellyfin 10.10.7之前版本存在参数注入漏洞，该漏洞源于FFmpeg参数注入，可能导致远程代码执行。

AI Predicted 8.1 Difficulty: Easy EPSS 0.80% · P56
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I. Basic Information for CVE-2025-31499

Vulnerability Information
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Vulnerability Title
Jellyfin Vulnerable to Argument Injection in FFmpeg
Source: CVE Program / CVE List V5
Vulnerability Description
Jellyfin is an open source self hosted media server. Versions before 10.10.7 are vulnerable to argument injection in FFmpeg. This can be leveraged to possibly achieve remote code execution by anyone with credentials to a low-privileged user. This vulnerability was previously reported in CVE-2023-49096 and patched in version 10.8.13, but the patch can be bypassed. The original fix sanitizes some parameters to make injection impossible, but certain unsanitized parameters can still be used for argument injection. The same unauthenticated endpoints are vulnerable: /Videos/<itemId>/stream and /Videos/<itemId>/stream.<container>, likely alongside similar endpoints in AudioController. This argument injection can be exploited to achieve arbitrary file write, leading to possible remote code execution through the plugin system. While the unauthenticated endpoints are vulnerable, a valid itemId is required for exploitation and any authenticated attacker could easily retrieve a valid itemId to make the exploit work. This vulnerability is patched in version 10.10.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5
Vulnerability Title
Jellyfin 参数注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jellyfin是Jellyfin开源的一个免费软件媒体系统。可让您控制媒体的管理和流式传输。它是专有Emby和Plex的替代产品，可以通过多个应用程序将专用服务器中的媒体提供给最终用户设备。 Jellyfin 10.10.7之前版本存在参数注入漏洞，该漏洞源于FFmpeg参数注入，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
jellyfin jellyfin < 10.10.7 -

II. Public POCs for CVE-2025-31499

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III. Intelligence Information for CVE-2025-31499

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Patches & Fixes for CVE-2025-31499 (1)

Vendor Advisories for CVE-2025-31499 (1)

IV. Related Vulnerabilities

Same product: jellyfin
Same vendor: jellyfin
Same weakness: CWE-88