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I. Basic Information for CVE-2026-25891
Vulnerability Information

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Vulnerability Title
Fiber has an Arbitrary File Read in Static Middleware on Windows
Source: NVD (National Vulnerability Database)
Vulnerability Description
Fiber is an Express inspired web framework written in Go. A Path Traversal (CWE-22) vulnerability in Fiber allows a remote attacker to bypass the static middleware sanitizer and read arbitrary files on the server file system on Windows. This affects Fiber v3 through version 3.0.0. This has been patched in Fiber v3 version 3.1.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Fiber 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fiber是Fiber开源的一款使用Go语言编写的开源Web框架。 Fiber v3 3.0.0及之前版本存在路径遍历漏洞,该漏洞源于静态中间件清理器可被绕过,可能导致在Windows服务器文件系统上读取任意文件。
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
gofiberfiber >= 3.0.0, < 3.1.0 -
II. Public POCs for CVE-2026-25891
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III. Intelligence Information for CVE-2026-25891
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