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I. Basic Information for CVE-2026-40252
Vulnerability Information

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Vulnerability Title
Broken Access Control (IDOR) Leading to Cross-Tenant Application Access in FastGPT
Source: NVD (National Vulnerability Database)
Vulnerability Description
FastGPT is an AI Agent building platform. Prior to 4.14.10.4, Broken Access Control vulnerability (IDOR/BOLA) allows any authenticated team to access and execute applications belonging to other teams by supplying a foreign appId. While the API correctly validates the team token, it does not verify that the requested application belongs to the authenticated team. This leads to cross-tenant data exposure and unauthorized execution of private AI workflows. This vulnerability is fixed in 4.14.10.4.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
FastGPT 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FastGPT是labring开源的一款基于大语言模型的开源知识库问答系统。 FastGPT 4.14.10.4之前版本存在安全漏洞,该漏洞源于访问控制不当,任何经过身份验证的团队通过提供外部appId即可访问和执行属于其他团队的应用程序,可能导致跨租户数据暴露和未经授权的私有AI工作流执行。
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
labringFastGPT < 4.14.10.4 -
II. Public POCs for CVE-2026-40252
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III. Intelligence Information for CVE-2026-40252
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