WeasyPrint helps web developers to create PDF documents. Since version 61.0, there's a vulnerability which allows attaching content of arbitrary files and URLs to a generated PDF document, even if `url_fetcher` is configured to prevent access to files and URLs. This vulnerability has been patched in version 61.2.
https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-35jj-wx47-4w8r
https://github.com/Kozea/WeasyPrint/commit/734ee8e2dc84ff3090682f3abff056d0907c8598