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CVE PROGRAM SOURCE RECORD6.1 Medium

CVE-2026-1011

Stored Cross-Site Scripting in Altium Live Support Center Comment Endpoint

Description

A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due to missing server-side input sanitization. Although the client interface applies HTML escaping, the backend accepts and stores arbitrary HTML and JavaScript supplied via modified POST requests. The injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim’s browser context.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Altium Altium Live

Default version status: unaffected

  • 0 to ≤ 1.1.1.39affected

References