CVE-2026-0535
Published: 22 January 2026
Summary
CVE-2026-0535 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Autodesk Fusion. Its CVSS base score is 8.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Taint Shared Content (T1080); ranked at the 43.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).
Deeper analysis
CVE-2026-0535 is a Stored Cross-site Scripting (XSS) vulnerability, classified under CWE-79, affecting the Autodesk Fusion desktop application. Published on 2026-01-22, it carries a CVSS v3.1 base score of 7.1 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N). The flaw occurs when a maliciously crafted HTML payload is stored in a component’s description and subsequently clicked by a user, triggering the XSS execution.
An attacker with the ability to store content in a component’s description can craft and inject the malicious HTML payload. Exploitation requires a user to click the payload within the Autodesk Fusion application, enabling the attacker to read local files or execute arbitrary code in the context of the current Fusion process.
Autodesk has addressed the vulnerability in security advisory ADSK-SA-2026-0001, available at https://www.autodesk.com/trust/security-advisories/adsk-sa-2026-0001. Updated installers providing patches are offered via the Fusion Client Downloader for macOS at https://dl.appstreaming.autodesk.com/production/installers/Fusion%20Client%20Downloader.dmg and for Windows at https://dl.appstreaming.autodesk.com/production/installers/Fusion%20Client%20Downloader.exe.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-3879
Vulnerability details
A maliciously crafted HTML payload, stored in a component’s description 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…
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or execute arbitrary code in the context of the current process.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stored XSS enables tainting shared component descriptions (T1080) that trigger client-side code execution when clicked (T1203/T1204.002).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation and sanitization of untrusted HTML input stored in component descriptions before it is rendered, blocking the malicious payload at the root of this stored XSS.
Requires filtering or encoding of information output when the component description is displayed, preventing script execution that leads to local file access or code execution.
Provides malicious-code detection and blocking mechanisms that can recognize and stop the injected script payload when the stored description is activated.