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CVE-2025-55204— muffon has One-click Remote Code Execution via XSS and Custom URL Handling

Quick assessment

Affected
staniel359 muffon
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

muffon是Aleksey Shpakovsky个人开发者的一个音乐播放软件。 muffon 2.3.0之前版本存在代码注入漏洞，该漏洞源于特制muffon链接处理不当，可能导致远程代码执行。

CVSS 8.8 · High EPSS 0.61% · P46
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I. Basic Information for CVE-2025-55204

Vulnerability Information
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Vulnerability Title
muffon has One-click Remote Code Execution via XSS and Custom URL Handling
Source: CVE Program / CVE List V5
Vulnerability Description
muffon is a cross-platform music streaming client for desktop. Versions prior to 2.3.0 have a one-click Remote Code Execution (RCE) vulnerability in. An attacker can exploit this issue by embedding a specially crafted `muffon://` link on any website they control. When a victim visits the site or clicks the link, the browser triggers Muffon’s custom URL handler, causing the application to launch and process the URL. This leads to RCE on the victim's machine without further interaction. Version 2.3.0 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
muffon 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
muffon是Aleksey Shpakovsky个人开发者的一个音乐播放软件。 muffon 2.3.0之前版本存在代码注入漏洞，该漏洞源于特制muffon链接处理不当，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
staniel359 muffon < 2.3.0 -

II. Public POCs for CVE-2025-55204

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6550 chars
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III. Intelligence Information for CVE-2025-55204

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Vendor Advisories for CVE-2025-55204 (1)

Other References for CVE-2025-55204 (2)

IV. Related Vulnerabilities

Same weakness: CWE-94

V. Comments for CVE-2025-55204

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