CVE-2025-55204: muffon is a cross-platform music streaming client for desktop

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HIGH 8.8UPGRADE

CVE-2025-55204 is a high-severity flaw (CVSS 8.8) affecting muffon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-94, CWE-79
Published	2026-01-05
Last modified	2026-10-07

Publisher (CNA): GitHub, Inc. · Vendor: muffon

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-05 18:15 UTCPublished CVE record published
2026-10-07 10:10 UTCUpdated Record last modified

muffon muffon UPGRADE

Affected: < 2.3.0

Fixed in: 2.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls muffon

2. UPGRADE to 2.3.0

npm install muffon@">=2.3.0"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-55204?

muffon: upgrade to 2.3.0. Exact commands for each OS are on this page.

Is CVE-2025-55204 being exploited?

CVE-2025-55204 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-55204 affect?

CVE-2025-55204 affects muffon. Severity is high (CVSS 8.8). 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 an

How urgent is CVE-2025-55204?

Priority 49/100. High severity; Public exploit reference

References

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