REDHAT-BUG-2430858: SSRF

Published Jan 19, 2026
·
Updated

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 defaulturlfetcher. 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 urlfetcher 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 Software

1 affected component
WeasyPrint WeasyPrint<68.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade weasyprint to a version that resolves this vulnerability.

    Fixed in 68.0

Event History

Jan 19, 2026
Data Sourced
via Red Hat·04:01 PM
DescriptionSeverityAffected Software
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Resources

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info@secalerts.co
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