# CVE-2026-4369: Stored Cross-Site Scripting (XSS) Vulnerability in Assembly Variant Name

> Stored XSS in Autodesk Fusion allows attackers to execute arbitrary code or read local files via malicious assembly variant names.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Apr 2026
- **Updated:** 15 Apr 2026
- **Also known as:** GHSA-mm54-xvph-7p9r

## What is CVE-2026-4369?

CVE-2026-4369 is a high-severity cross-site scripting vulnerability in Autodesk Fusion, published on 14 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A maliciously crafted HTML payload in an assembly variant name, when displayed during the delete confirmation dialog and clicked by a user, can trigger a Stored Cross-site Scripting (XSS) vulnerability in the Autodesk Fusion desktop application. A malicious actor may leverage this vulnerability to read local files or execute arbitrary code in the context of the current process.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-4369?

It affects 1 product.


Products: Autodesk Fusion.

## How do I fix CVE-2026-4369?

No fix has been published for CVE-2026-4369 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4369 being exploited?

There is no known exploitation of CVE-2026-4369 in the wild and no public exploit code.

## Other vulnerabilities in Autodesk Fusion

- [CVE-2026-10789](https://insights.sbomify.com/CVE-2026-10789/): MCP Extension Code Injection Vulnerability in Autodesk Fusion Desktop (critical 9.6)
- [CVE-2025-10244](https://insights.sbomify.com/CVE-2025-10244/): HTML Payload Stored Cross-Site Scripting (XSS) Vulnerability (high 8.7)
- [CVE-2026-0533](https://insights.sbomify.com/CVE-2026-0533/): Stored XSS in Fusion desktop when attempting to delete a file (high 8.1)
- [CVE-2026-0534](https://insights.sbomify.com/CVE-2026-0534/): Stored XSS in the value of a part attribute (high 8.1)
- [CVE-2026-0535](https://insights.sbomify.com/CVE-2026-0535/): Stored XSS in Electronic Library Component Description (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4369 and fix it if it is affected.

What it is: CVE-2026-4369 is a high-severity cross-site scripting vulnerability in Autodesk Fusion, published on 14 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-4369 in the wild and no public exploit code.

Affected product: Autodesk Fusion. 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-2026-4369/ (Markdown: https://insights.sbomify.com/CVE-2026-4369/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4369
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4369
- OSV: https://osv.dev/vulnerability/CVE-2026-4369

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-4369/
Summaries are generated and may contain mistakes; the official description above is the record.