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I. Basic Information for CVE-2025-71278
Vulnerability Information

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Vulnerability Title
XenForo OAuth2 Unauthorized Scope Request
Source: NVD (National Vulnerability Database)
Vulnerability Description
XenForo before 2.3.5 allows OAuth2 client applications to request unauthorized scopes. This affects any customer using OAuth2 clients on any version of XenForo 2.3 prior to 2.3.5, potentially allowing client applications to gain access beyond their intended authorization level.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Xenforo 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xenforo是Xenforo公司的一个论坛软件。 XenForo 2.3.5之前版本存在安全漏洞,该漏洞源于OAuth2客户端应用程序可以请求未经授权的范围,可能导致客户端应用程序获得超出其预期授权级别的访问权限。
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
XenForoXenForo 2.3.0 ~ 2.3.5 -
II. Public POCs for CVE-2025-71278
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III. Intelligence Information for CVE-2025-71278
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IV. Related Vulnerabilities
V. Comments for CVE-2025-71278

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