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fix: strip http forwarded headers from requests to kc #624

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Merged
manusa merged 1 commit into from
Jan 7, 2026
Merged

fix: strip http forwarded headers from requests to kc #624

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7 changes: 7 additions & 0 deletions pkg/http/wellknown.go
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,13 @@ func (w WellKnown) ServeHTTP(writer http.ResponseWriter, request *http.Request)
return
}
for key, values := range request.Header {
// Skip headers that would cause Keycloak to use the proxy's hostname in URLs
lowerKey := strings.ToLower(key)
if lowerKey == "host" ||
strings.HasPrefix(lowerKey, "x-forwarded-") ||
lowerKey == "forwarded" {
continue
}
for _, value := range values {
req.Header.Add(key, value)
}
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