High severity8.8OSV Advisory· Published Jan 5, 2026· Updated Jun 17, 2026
CVE-2025-55204
CVE-2025-55204
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.
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Affected products
3- Range: v0.1.0, v0.1.0-alpha, v0.1.0-alpha.1, …
Patches
Vulnerability mechanics
References
3- drive.google.com/file/d/1eCPCQ6leuVM_vecfofFv04c0t9isCBqR/viewnvdExploit
- github.com/staniel359/muffon/security/advisories/GHSA-gc3f-gqph-522qnvdExploitThird Party Advisory
- github.com/staniel359/muffon/releases/tag/v2.3.0nvdProductRelease Notes
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