CVE-2025-68616-Detecting-and-Patching-an-SSRF-in-WeasyPrint-with-Wazuh

从检测到修复：使用Wazuh狩猎并修补WeasyPrint中的真实SSRF漏洞（CVE-2025-68616） TL;DR 在Kali Linux机器上使用Wazuh （开源SIEM/XDR）进行的个人实践练习中，漏洞检测 模块识别出WeasyPrint 包中存在一个高（CVSS 7.5）严重性漏洞：SSRF保护绕过（CVE-2025-68616 ）。我调查了该发现，通过本地概念验证复现了问题，应用了项目的修补版本，并验证了漏洞利用不再有效。本仓库记录了完整流程：检测、分析、PoC和修复。 背景 Wazuh 是一个开源安全平台（SIEM +...

CVE-2026-55073

A flaw was found in WeasyPrint. Server-side applications that configure a restrictive URL fetcher and pass attacker-influenced values to HTML.writepdf can have the restriction bypassed through the xmpmetadata or stylesheets options. This allows an attacker to read local files or perform Server-Si...

CVE-2026-55073

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive urlfetcher and pass attacker-influenced values to HTML.writepdf can have the restriction bypassed through the xmpmetadata or stylesheets options. In weasyprint/pdf/init.py...

DEBIAN-CVE-2026-55073

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive urlfetcher and pass attacker-influenced values to HTML.writepdf can have the restriction bypassed through the xmpmetadata or stylesheets options. In weasyprint/pdf/init.py...

CVE-2026-55073

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive urlfetcher and pass attacker-influenced values to HTML.writepdf can have the restriction bypassed through the xmpmetadata or stylesheets options. In weasyprint/pdf/init.py...

UBUNTU-CVE-2026-55073

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive urlfetcher and pass attacker-influenced values to HTML.writepdf can have the restriction bypassed through the xmpmetadata or stylesheets options. In weasyprint/pdf/init.py...

CVE-2026-55073

WeasyPrint prior to 70.0 contains a url_fetcher bypass in two write_pdf() code paths. The xmp_metadata parameter in weasyprint/pdf/__init__.py calls select_source() without passing the document's fetcher, enabling arbitrary local file read with contents embedded verbatim in the output PDF. The st...

CVE-2026-55073 WeasyPrint restrictive URL fetcher bypass allows local file read and SSRF

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive urlfetcher and pass attacker-influenced values to HTML.writepdf can have the restriction bypassed through the xmpmetadata or stylesheets options. In weasyprint/pdf/init.py...

CVE-2026-55073

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive urlfetcher and pass attacker-influenced values to HTML.writepdf can have the restriction bypassed through the xmpmetadata or stylesheets options. In weasyprint/pdf/init.py...

EUVD-2026-77638

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive urlfetcher and pass attacker-influenced values to HTML.writepdf can have the restriction bypassed through the xmpmetadata or stylesheets options. In weasyprint/pdf/init.py...

CVE-2026-55073 WeasyPrint restrictive URL fetcher bypass allows local file read and SSRF

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive urlfetcher and pass attacker-influenced values to HTML.writepdf can have the restriction bypassed through the xmpmetadata or stylesheets options. In weasyprint/pdf/init.py...

PYSEC-2026-3940 weasyprint Has Server-Side Request Forgery (SSRF)

Summary urlfetcher is WeasyPrint's documented mechanism for restricting resource loading - applications use it to block file://, internal hosts, etc. when rendering untrusted input. Two writepdf channels ignore the document's urlfetcher and build a fresh default URLFetcher instead. A restrictive...

weasyprint Has Server-Side Request Forgery (SSRF)

Summaryurlfetcher is WeasyPrint's documented mechanism for restricting resource loading - applications use it to block file://, internal hosts, etc. when rendering untrusted input.Two writepdf channels ignore the document's urlfetcher and build a fresh default URLFetcher instead. A restrictive...

weasyprint Has Server-Side Request Forgery (SSRF)

Summary urlfetcher is WeasyPrint's documented mechanism for restricting resource loading - applications use it to block file://, internal hosts, etc. when rendering untrusted input. Two writepdf channels ignore the document's urlfetcher and build a fresh default URLFetcher instead. A restrictive...

Server-side Request Forgery (SSRF)

Overview weasyprint is a The Awesome Document Factory Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the writepdf stylesheet and XMP metadata loading paths in weasyprint/document.py and weasyprint/pdf/init.py. An attacker can make the rendering process...

GHSA-JF6Q-CHMF-3H3V weasyprint Has Server-Side Request Forgery (SSRF)

Summary urlfetcher is WeasyPrint's documented mechanism for restricting resource loading - applications use it to block file://, internal hosts, etc. when rendering untrusted input. Two writepdf channels ignore the document's urlfetcher and build a fresh default URLFetcher instead. A restrictive...

PT-2026-89206

Summary url fetcher is WeasyPrint's documented mechanism for restricting resource loading - applications use it to block file://, internal hosts, etc. when rendering untrusted input. Two write pdf channels ignore the document's url fetcher and build a fresh default URLFetcher instead. A restricti...

CVE-2026-49452

A flaw was found in WeasyPrint, a tool designed to create PDF documents from web content. When processing untrusted HTML with presentational hints enabled, WeasyPrint embeds unescaped HTML attribute values directly into CSS declarations. This vulnerability allows a remote attacker to inject...

CVE-2026-78385

RansomLook contains insufficient resource validation in the analysis PDF generation functionality. Analysis documents are converted from Markdown to HTML and passed to WeasyPrint for PDF rendering. Prior to the fix, WeasyPrint used its default URL fetcher, allowing resource references contained i...

CVE-2026-78385

RansomLook contains an insufficient resource validation flaw in its analysis PDF generation functionality. Analysis documents are converted from Markdown to HTML and rendered via WeasyPrint . Prior to the fix, WeasyPrint's default URL fetcher resolved resource references without restrictions, all...