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I. Basic Information for CVE-2026-1011
Vulnerability Information

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Vulnerability Title
Stored Cross-Site Scripting in Altium Live Support Center Comment Endpoint
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Altium 365 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Altium 365是美国Altium公司的一个产品设计和开发平台。 Altium 365存在安全漏洞,该漏洞源于AddComment端点缺少服务器端输入清理,可能导致存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
AltiumAltium Live 0 ~ 1.1.1.39 -
II. Public POCs for CVE-2026-1011
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III. Intelligence Information for CVE-2026-1011
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IV. Related Vulnerabilities
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