CVE-2026-1011 - Stored Cross-Site Scripting in Altium Support Center Comment Endpoint

CVE ID : CVE-2026-1011 Published : Jan. 16, 2026, 12:16 a.m. | 1 hour, 56 minutes ago 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. Severity: 8.2 | HIGH Visit the link for more details, such as CVSS details, affected products, timeline, and more...