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CVE-2025-71405— go-chi chi before v5.2.2 Open Redirect via RedirectSlashes

Quick assessment

Affected
go-chi chi
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

go-chi chi是go-chi组织开源的一个轻量级、符合 Go 语言习惯且可组合的路由工具。 go-chi chi 5.2.2之前版本存在输入验证错误漏洞，该漏洞源于RedirectSlashes中间件函数使用Host头构造重定向URL，可能导致攻击者操纵Host头将用户重定向到任意主机，造成钓鱼攻击和凭据窃取。

CVSS 5.1 · Medium EPSS 0.39% · P32

Affected Version Matrix 2

VendorProduct Version RangeStatus
go-chi chi < 5.2.2 affected
5.2.2 unaffected
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I. Basic Information for CVE-2025-71405

Vulnerability Information
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Vulnerability Title
go-chi chi before v5.2.2 Open Redirect via RedirectSlashes
Source: CVE Program / CVE List V5
Vulnerability Description
chi versions before v5.2.2 contain an open redirect vulnerability in the RedirectSlashes middleware function that uses the Host header to construct redirect URLs. Attackers can manipulate the Host header to redirect users to arbitrary hosts, enabling phishing attacks and credential theft.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
go-chi chi 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
go-chi chi是go-chi组织开源的一个轻量级、符合 Go 语言习惯且可组合的路由工具。 go-chi chi 5.2.2之前版本存在输入验证错误漏洞，该漏洞源于RedirectSlashes中间件函数使用Host头构造重定向URL，可能导致攻击者操纵Host头将用户重定向到任意主机，造成钓鱼攻击和凭据窃取。
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

Vendor Product Affected Versions CPE Subscribe
go-chi chi 0 ~ 5.2.2 -

II. Public POCs for CVE-2025-71405

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III. Intelligence Information for CVE-2025-71405

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Vendor Advisories for CVE-2025-71405 (2)

Same Patch Batch · go-chi · 2026-08-14 · 4 CVEs total

CVE-2026-72815 6.9 MEDIUM go-chi chi v5.2.1 IP Spoofing via X-Forwarded-For Header
CVE-2026-72817 6.5 MEDIUM go-chi chi 0.9.0 before 5.3.0 IP Spoofing via X-Forwarded-For
CVE-2026-72816 6.5 MEDIUM go-chi chi before 5.3.0 IP Spoofing via RealIP Middleware

IV. Related Vulnerabilities

Same product: chi
Same vendor: go-chi
Same weakness: CWE-601

V. Comments for CVE-2025-71405

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