[v7.5.x] Fix for CVE-2022-21702 (#226)

Fix for CVE-2022-21702

pkg/api/pluginproxy/ds_proxy.go

@@ -49,6 +49,7 @@ func (t *handleResponseTransport) RoundTrip(req *http.Request) (*http.Response,
 		return nil, err
 	}
 	res.Header.Del("Set-Cookie")
+	proxyutil.SetProxyResponseHeaders(res.Header)
 	return res, nil
 }