What’s Vulnerable › Vulnerabilities

CVE-2025-68616: WeasyPrint Vulnerable to Server-Side Request Forgery (SSRF) Protection Bypass via HTTP Redirect

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-19 · updated 2026-07-15
• Weakness: CWE-601

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

• Kozea WeasyPrint: before 68.0 — fixed in 68.0

How to fix

Upgrade to a fixed version: Kozea WeasyPrint 68.0. Check the vendor advisory for mitigations.

References

• https://github.com/Kozea/WeasyPrint/commit/b6a14f0f3f4ce9c0c75c1a2d73cb1c5d43f0e565
• https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-983w-rhvv-gwmv
• https://access.redhat.com/security/cve/CVE-2025-68616
• https://bugzilla.redhat.com/show_bug.cgi?id=2430858
• https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-983w-rhvv-gwmv
• https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68616.json

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