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.
References (3)
Core 3
Core References
Exploit, Vendor Advisory x_refsource_confirm
https://github.com/9001/copyparty/security/advisories/GHSA-9q4r-x2hj-jmvr
Patch x_refsource_misc
https://github.com/9001/copyparty/commit/895880aeb0be0813ddf732487596633f8f9fc3a6
Release Notes x_refsource_misc
https://github.com/9001/copyparty/releases/tag/v1.18.5
Scores
CVSS v3
5.4
EPSS
0.0011
EPSS Percentile
28.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
9001/copyparty
< 1.18.5
pypi/copyparty
0 - 1.18.5PyPI
Published
Jul 28, 2025
Tracked Since
Feb 18, 2026