CVE-2026-55073: fallo de gravedad media en Kozea WeasyPrint
WeasyPrint restrictive URL fetcher bypass allows local file read and SSRF
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.2epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Productos afectados
Kozea · WeasyPrintCVEs relacionadas — Kozea WeasyPrint
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-106443HIGHWeasyPrint: EPS images reach the Ghostscript interpreter resulting in RCEEPSS 0.9%CVE-2024-28184HIGHWeasyPrint allows the attachment of arbitrary files and URLs to a PDFEPSS 0.7%CVE-2025-68616HIGHWeasyPrint Vulnerable to Server-Side Request Forgery (SSRF) Protection Bypass via HTTP RedirectEPSS 0.7%CVE-2026-49452MEDIUMWeasyPrint: CSS Injection via Presentational HintsEPSS 0.4%