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.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| security-advisories@github.com | 7.4 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L | 3.1 | 3.7 |
Products Affected
| Vendor | Product | Version |
|---|---|---|
| kozea | weasyprint | * |
| fedoraproject | fedora | 40 |
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.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| security-advisories@github.com | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | 3.9 | 3.6 |
Products Affected
| Vendor | Product | Version |
|---|---|---|
| kozea | weasyprint | * |