CVE Watch14 sept 2026

CVE-2026-55073

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive url_fetcher an

CVSS

6.2

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 14 sept 2026 · Última mod.: 14 sept 2026 · CWE-918

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive url_fetcher and pass attacker-influenced values to HTML.write_pdf() can have the restriction bypassed through the xmp_metadata or stylesheets options. In weasyprint/pdf/init.py, xmp_metadata calls select_source() without the document url_fetcher, allowing an accessible local file to be read and embedded verbatim in the output PDF. In weasyprint/document.py, stylesheets constructs CSS() without the document url_fetcher, allowing local or internal resource loading and propagating the permissive fetcher through nested CSS imports and url() references. The stylesheets channel applies fetched resources but does not by itself disclose stylesheet comments verbatim. This issue is fixed in version 70.0.

Referencias oficiales

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