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


- **Severity:** Medium 6.8 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 30 Oct 2026
- **Updated:** 2 Nov 2026
- **Also known as:** GHSA-3x7x-943g-269w

## What is CVE-2026-119343?

CVE-2026-119343 is a medium-severity vulnerability in Stirling-Tools Stirling-PDF, published on 30 Oct 2026. 

### Official 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.

Weakness: CWE-918 (Server-Side Request Forgery), CWE-73 (External Control of File Name or Path)

## Which versions are affected by CVE-2026-119343?


## How do I fix CVE-2026-119343?

No fix has been published for CVE-2026-119343 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-119343 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-119343 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-119343 and fix it if it is affected.

What it is: CVE-2026-119343 is a medium-severity vulnerability in Stirling-Tools Stirling-PDF, published on 30 Oct 2026. 
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-119343 exists.

Affected product: Stirling-Tools Stirling-PDF. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-119343/ (Markdown: https://insights.sbomify.com/CVE-2026-119343/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-119343
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119343
- OSV: https://osv.dev/vulnerability/CVE-2026-119343

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-119343/
Summaries are generated and may contain mistakes; the official description above is the record.