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Tool Directory

CVE-2025-54589

MediumPublished

copyparty Reflected XSS via Filter Parameter

Published: Jul 31, 2025
Updated: Jul 31, 2025
Assigning CNA: GitHub_M
Evidence observed: Aug 3, 2025

Primary CVSS

6.3/ 10Medium

nvd · CVSS 3.1

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

EPSS probability estimate

2.4%

Low · next 30 days

Percentile: 83.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

Copyparty 1.18.6 - Reflected Cross-Site Scripting (XSS)Exploit
Byte Reaper · multiple · Aug 3, 2025

Responsible use

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