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.
References
https://github.com/staniel359/muffon/releases/tag/v2.3.0
https://github.com/staniel359/muffon/security/advisories/GHSA-gc3f-gqph-522q
CVSS impact metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8 · High
Information
Source identifier
Vulnerability status
Analyzed
Published
2026-01-05T18:15:42.987Z
1 week agoLast modified
2026-01-12T18:11:26.333Z
6 hours ago