CVE-2026-72817: medium-severity vulnerability in go-chi chi
go-chi chi 0.9.0 before 5.3.0 IP Spoofing via X-Forwarded-For
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.2%
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.
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
Affected products
go-chi · chiRelated CVEs — go-chi chi
In the same product, most dangerous first.
CVE-2026-72815MEDIUMgo-chi chi v5.2.1 IP Spoofing via X-Forwarded-For HeaderEPSS 0.5%CVE-2025-71405MEDIUMgo-chi chi before v5.2.2 Open Redirect via RedirectSlashesEPSS 0.4%CVE-2026-72816MEDIUMgo-chi chi before 5.3.0 IP Spoofing via RealIP MiddlewareEPSS 0.3%CVE-2026-118681MEDIUMgo-chi chi before 5.5.0 Authentication Bypass via SupressNotFound MiddlewareEPSS 0.2%CVE-2026-114437MEDIUMChi Client IP Spoofing in ClientIPFromXFF via X-Forwarded-ForEPSS 0.1%