GHSA-8mx2-rjh8-q3jq copyparty Reflected XSS via Filter Parameter

• PyPI copyparty: < 1.18.7 → fixed in 1.18.7

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 `` 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=alert(1) ```