CVE-2025-54423

Name: CVE-2025-54423
Creator: NVD / NIST
Published: 2025-07-28T20:17:48.573+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2025-54423 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. copyparty is a portable file server. In versions up to and including versions 1.18.4, an unauthenticated attacker is able to execute arbitrary JavaScript code in a victim's browser due to improper sanitization of multimedia tags in music files, including m3u files. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

copyparty is a portable file server. In versions up to and including versions 1.18.4, an unauthenticated attacker is able to execute arbitrary JavaScript code in a victim's browser due to improper sanitization of multimedia tags in music files, including m3u files. This is fixed in version 1.18.5.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.38%

29.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
9001	Copyparty	< 1.18.5

References

https://github.com/9001/copyparty/commit/895880aeb0be0813ddf732487596633f8f9fc3a6Patch
https://github.com/9001/copyparty/releases/tag/v1.18.5Release Notes
https://github.com/9001/copyparty/security/advisories/GHSA-9q4r-x2hj-jmvrExploit, Vendor Advisory

Timeline

Published: Jul 28, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-54423?

How severe is CVE-2025-54423?

CVE-2025-54423 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2025-54423?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-54423?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST