CVE-2025-54589
MEDIUM6.3EPSS 0.78%copyparty Reflected XSS via Filter Parameter
Description
### Summary Unauthorized reflected Cross-Site-Scripting when accessing the URL for recent uploads with the `filter` parameter containing JavaScript code. ### Details 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. This vulnerability allows for reflected Cross-Site Scripting (XSS) and can be exploited against both authenticated and unauthenticated users, enabling unwanted actions in the victims browser. ### PoC A URL like this will execute `alert(1)`: ``` https://127.0.0.1:3923/?ru&filter=</script><script>alert(1)</script> ```
Affected packages (1)
- PyPI/copypartyfrom 0, < 1.18.7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
References (5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-54589
- PATCHhttps://github.com/9001/copyparty
- WEBhttps://github.com/9001/copyparty/commit/a8705e611d05eeb22be5d3d7d9ab5c020fe54c62
- WEBhttps://github.com/9001/copyparty/releases/tag/v1.18.7
- WEBhttps://github.com/9001/copyparty/security/advisories/GHSA-8mx2-rjh8-q3jq