CVE-2026-114437: medium-severity vulnerability in go-chi chi
Chi Client IP Spoofing in ClientIPFromXFF via X-Forwarded-For
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.3epss 0.1%
In the Golang Chi web framework, the ClientIPFromXFF middleware skips any X-Forwarded-For entry in a configured trusted CIDR but never verifies that the direct TCP peer in http.Request.RemoteAddr belongs to that CIDR. A client that can reach the Go server directly can therefore append a trusted-looking proxy address and choose the client IP returned by middleware.GetClientIP.
This issue affects chi before 5.4.0.
CVSS:4.0/AV:N/AC:H/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-2026-72817MEDIUMgo-chi chi 0.9.0 before 5.3.0 IP Spoofing via X-Forwarded-ForEPSS 0.2%