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I. Basic Information for CVE-2026-34735
Vulnerability Information

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Vulnerability Title
Hytale Modding Vulnerable to Remote Code Execution via File Upload Bypass in `FileController`
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Hytale Modding Wiki is a free service for Hytale mods to host their documentation & wikis. In version 1.2.0 and prior, the quickUpload() endpoint validates uploaded files by checking their MIME type (via PHP's finfo, which inspects file contents) but constructs the stored filename using the client-supplied file extension from getClientOriginalExtension(). These two checks are independent: an attacker can upload a file whose content passes the MIME allowlist while using a .php extension. The file is stored on the public disk and is directly accessible via URL, allowing server-side code execution. At time of publication no known patches exist.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
危险类型文件的不加限制上传
Source: NVD (National Vulnerability Database)
Vulnerability Title
HytaleModding Wiki 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HytaleModding Wiki是Hytale Modding开源的一个游戏模组文档协作平台。 HytaleModding Wiki 1.2.0及之前版本存在代码问题漏洞,该漏洞源于quickUpload端点验证MIME类型但使用客户端提供的文件扩展名,可能导致服务器端代码执行。
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
HytaleModdingwiki <= 1.2.0 -
II. Public POCs for CVE-2026-34735
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III. Intelligence Information for CVE-2026-34735
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