CVE-2025-68616
WeasyPrint Vulnerable to Server-Side Request Forgery (SSRF) Protection Bypass via HTTP Redirect
- State
- Published
- Severity
- 7.5 High
- Published
- Jan 19, 2026
- Updated
- Jul 15, 2026
- Reserved
- Dec 19, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | GitHub_M |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
WeasyPrintKozea |
|
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-2025-68616vdb-entry
- RHBZ#2430858issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68616.json
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