Server-side Request Forgery (SSRF) Affecting weasyprint package, versions [,70.0)
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Start learning- Snyk IDSNYK-PYTHON-WEASYPRINT-19659995
- published10 Sept 2026
- disclosed9 Sept 2026
- creditko41a
Introduced: 9 Sep 2026
NewCVE-2026-55073 (opens in a new tab)How to fix?
Upgrade weasyprint to version 70.0 or higher.
Overview
weasyprint is a The Awesome Document Factory
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the write_pdf() stylesheet and XMP metadata loading paths in weasyprint/document.py and weasyprint/pdf/__init__.py. An attacker can make the rendering process fetch local or internal resources by supplying attacker-controlled URLs or paths through stylesheets= or xmp_metadata=. This bypasses the document’s configured url_fetcher, so server-side PDF generation can read local files or reach internal endpoints, leading to data exposure and unintended resource access in applications that render untrusted input.