CVE-2025-54589CWE-79CWE-80

copyparty Reflected XSS via Filter Parameter

Medium · published July 31, 2025

CVSS v3.1
6.3
EPSS
2%
Percentile
83.8
In the wild
Unconfirmed
What it is

Copyparty is a portable file server. In versions 1.18.6 and below, when accessing the recent uploads page at `/?ru`, users can filter the results using an input field at the top. This field appends a filter parameter to the URL, which reflects its value directly into a `<script>` block without proper escaping, allowing for reflected Cross-Site Scripting (XSS) and can be exploited against both authenticated and unauthenticated users. This is fixed in version 1.18.7.

The record
Technical detail
CVSS v3.1
6.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.02390 · 83.8th percentile
Weaknesses
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'); CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Published
2025-07-31T13:48Z
EPSS history
Timeline
  • 31 JUL 13:48Z
    copyparty Reflected XSS via Filter Parameter
    cvelistv5