What is CVE-2026-4345?

CVE-2026-4345 is a high-severity vulnerability in Autodesk Fusion, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-04-14.

How severe is CVE-2026-4345?

High severity. CVSS v3 base score is 7.1 out of 10.

XSS in Autodesk Fusion

CVE-2026-4345

A maliciously crafted HTML payload, stored in a design name and exported to CSV, can trigger a Stored Cross-site Scripting (XSS) vulnerability in the Autodesk Fusion desktop application. A malicious actor may leverage this vulnerability to…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (6.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Autodesk Fusion — versions 2606.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.autodesk.com/trust/security-advisories/adsk-sa-2026-0005 (vendor-advisory)
dl.appstreaming.autodesk.com/production/installers/Fusion Client Downloader.exe (patch)
dl.appstreaming.autodesk.com/production/installers/Fusion Client Downloader.dmg (patch)

Frequently asked questions

What is CVE-2026-4345?: CVE-2026-4345 is a high-severity vulnerability in Autodesk Fusion, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-04-14.
How severe is CVE-2026-4345?: High severity. CVSS v3 base score is 7.1 out of 10.