Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-119343— Stirling-PDF: AI create-pdf-from-html-agent skips HTML sanitization enabling WeasyPrint SSRF and local file read

Quick assessment

Affected
Stirling-Tools Stirling-PDF
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Stirling-PDF 是一款本地托管的 Web 应用程序，支持对 PDF 文件执行多种操作。在 3.0.0 版本之前，POST /api/v1/ai/tools/create-pdf-from-html-agent 接口会接收攻击者控制的 htmlContent 参数，并将其直接传递给 WeasyPrint 进行处理，而未经过 CustomHtmlSanitizer 的净化（这与已进行净化的 /api/v1/convert/html/pdf 控制路径不同）。该漏洞允许通过 HTTP 和 HTTPS 资源引用触发

CVSS 6.8 · Medium
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-119343

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Stirling-PDF: AI create-pdf-from-html-agent skips HTML sanitization enabling WeasyPrint SSRF and local file read
Source: CVE Program / CVE List V5
Vulnerability Description
Stirling-PDF is a locally hosted web application that facilitates various operations on PDF files. Prior to 3.0.0, POST /api/v1/ai/tools/create-pdf-from-html-agent accepts attacker-controlled htmlContent and passes it to WeasyPrint without CustomHtmlSanitizer, unlike the sanitized /api/v1/convert/html/pdf control path. HTTP and HTTPS resource references can make server-side requests to internal or cloud-metadata destinations, while file references can embed local content readable by the Stirling-PDF process into the generated PDF. The endpoint is reachable without credentials when security.enableLogin is false, and the flaw is distinct from earlier Stirling-PDF WeasyPrint vulnerabilities in older conversion paths. This issue is fixed in version 3.0.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
文件名或路径的外部可控制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Stirling-Tools Stirling-PDF < 3.0.0 -

II. Public POCs for CVE-2026-119343

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-119343

请登录查看更多情报信息。

Other References for CVE-2026-119343 (4)

IV. Related Vulnerabilities

Same product: Stirling-PDF
Same vendor: Stirling-Tools
Same weakness: CWE-73