CVE-2025-55204

muffon has One-click Remote Code Execution via XSS and Custom URL Handling

Published Jan 5, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Muffon
Muffon muffon
Weaknesses CWE-79
CPEs cpe:2.3:a:muffon:muffon:*:*:*:*:*:node.js:*:*
Vendors & Products Muffon
Muffon muffon
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title muffon has One-click Remote Code Execution via XSS and Custom URL Handling
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jan 5, 2026, 7:55 PM
Reserved
Aug 8, 2025, 9:55 PM
Status
Analyzed
Published
Jan 5, 2026, 6:15 PM
Modified
Oct 7, 2026, 10:10 AM