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GHSA-8mx2-rjh8-q3jq

copyparty Reflected XSS via Filter Parameter

Source: GitHub Advisory Database (reviewed) Moderate CVE-2025-54589

Packages

EcosystemPackageAffectedFixed in
PyPI copyparty < 1.18.7 1.18.7

Details

As written in the advisory (Markdown source, shown as plain text).

### 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> ```

References

External links from the advisory. They lead to third-party sites.