Description
WeasyPrint helps web developers to create PDF documents. Prior to version 68.0, a server-side request forgery (SSRF) protection bypass exists in WeasyPrint's `default_url_fetcher`. The vulnerability allows attackers to access internal network resources (such as `localhost` services or cloud metadata endpoints) even when a developer has implemented a custom `url_fetcher` to block such access. This occurs because the underlying `urllib` library follows HTTP redirects automatically without re-validating the new destination against the developer's security policy. Version 68.0 contains a patch for the issue.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Kozea WeasyPrint
< 68.0affected
References
- https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-983w-rhvv-gwmv ↗
- https://github.com/Kozea/WeasyPrint/commit/b6a14f0f3f4ce9c0c75c1a2d73cb1c5d43f0e565 ↗
- https://access.redhat.com/security/cve/CVE-2025-68616 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2430858 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68616.json ↗