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Advisories

go-chi chi 0.9.0 before 5.3.0 IP Spoofing via X-Forwarded-For

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severity
medium
date
Affecting

  • chi >= 0.9.0, < 5.3.0

CWE
  • CWE-345 Insufficient Verification of Data Authenticity
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
convto
Description
go-chi/chi versions 0.9.0 before 5.3.0 contains an IP spoofing vulnerability in the RealIP middleware, which resolves the request source IP (Request.RemoteAddr) using the first IP in the X-Forwarded-For header without validating trusted proxies. A malicious client can prepend a forged IP as the first value of the X-Forwarded-For header to spoof the request source IP, potentially bypassing access controls or falsifying request logs.

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