estoy obteniendoSUBSCRIPTION_JSON desde el cliente, lo estoy convirtiendo en String y luego configurándolo en Model Object usando la biblioteca gson. Al ejecutar el código en la seguridad Fortify, me está dando un error de inyección Json en el siguiente código con el siguiente mensaje:

Aquí está el error:

On line 159 of ActionHelper.java, the method jsonToObject() writes unvalidated input into JSON. This call could allow an attacker to inject arbitrary elements or attributes into the JSON entity.The method writes unvalidated input into JSON. This call could allow an attacker to inject arbitrary elements or attributes into the JSON entity.

Explanation
JSON injection occurs when:

1. Data enters a program from an untrusted source.

In this case the data enters at getString() in **SubscriptionAction.java** at line 355.


2. The data is written to a JSON stream.

In this case the JSON is written by fromJson() in **ActionHelper.java** at line 159.

SubscriptionAction.java

final String subscriptionJson = subscriptionForm.getString(SUBSCRIPTION_JSON);

ActionHelper.java

public static <T> T jsonToObject(final String jsonString, final Class<T> className) {
        T object = null;
        if (StringUtils.isNotBlank(jsonString)) {
            final Gson gson = (Gson) BeanLocator.getInstance().getBean(GSON);
            object = gson.fromJson(jsonString, className);
        }
        return object;
    }

SUBSCRIPTION_JSON ->

{
    "subscriptions": [{
        "attributeId": "1",
        "items": [{
            "strId": "ALL",
            "nodeType": "G"
        }, {
            "strId": "VO_ENTRY_TIMING_DELAY",
            "nodeType": "L"
        }, {
            "strId": "O_INVALID",
 ,           "nodeType": "L"
        }, {
            "strId": "O_LINE_INVALID",
            "nodeType": "L"
        }, {
            "strId": "V_INVALID",
            "nodeType": "L"
        }, {
            "strId": "V_ADDRESS_INVALID",
            "nodeType": "L"
        }]
    }, {
        "attributeId": "2001",
        "items": [{
            "strId": "OSTBU",
            "nodeType": "L"
        }]
    }]
}