diff --git a/openvasd/openvasd.c b/openvasd/openvasd.c
index a8ed0e48..7298e013 100644
--- a/openvasd/openvasd.c
+++ b/openvasd/openvasd.c
@@ -12,6 +12,7 @@
 
 #include "../base/array.h"
 #include "../base/networking.h"
+#include "../util/json.h"
 
 #include <cjson/cJSON.h>
 #include <curl/curl.h>
@@ -1095,7 +1096,6 @@ openvasd_parsed_results (openvasd_connector_t conn, unsigned long first,
   const gchar *err = NULL;
   openvasd_resp_t resp = NULL;
   openvasd_result_t result = NULL;
-  unsigned long id = 0;
   gchar *type = NULL;
   gchar *ip_address = NULL;
   gchar *hostname = NULL;
@@ -1133,10 +1133,6 @@ openvasd_parsed_results (openvasd_connector_t conn, unsigned long first,
       // error
       goto res_cleanup;
 
-    if ((item = cJSON_GetObjectItem (result_obj, "id")) != NULL
-        && cJSON_IsNumber (item))
-      id = item->valuedouble;
-
     if ((item = cJSON_GetObjectItem (result_obj, "type")) != NULL
         && cJSON_IsString (item))
       type = g_strdup (item->valuestring);
@@ -1193,7 +1189,8 @@ openvasd_parsed_results (openvasd_connector_t conn, unsigned long first,
           detail_source_description = g_strdup (detail_obj->valuestring);
       }
 
-    result = openvasd_result_new (id, type, ip_address, hostname, oid, port,
+    result = openvasd_result_new (gvm_json_obj_double (result_obj, "id"),
+                                  type, ip_address, hostname, oid, port,
                                   protocol, message, detail_name, detail_value,
                                   detail_source_type, detail_source_name,
                                   detail_source_description);
@@ -1410,7 +1407,6 @@ openvasd_parsed_scan_status (openvasd_connector_t conn)
   cJSON *status = NULL;
   openvasd_resp_t resp = NULL;
   gchar *status_val = NULL;
-  time_t start_time = 0, end_time = 0;
   int progress = -1;
   openvasd_status_t status_code = OPENVASD_SCAN_STATUS_ERROR;
   openvasd_scan_status_t status_info;
@@ -1433,14 +1429,6 @@ openvasd_parsed_scan_status (openvasd_connector_t conn)
     goto status_cleanup;
   status_val = g_strdup (status->valuestring);
 
-  if ((status = cJSON_GetObjectItem (parser, "start_time")) != NULL
-      && !cJSON_IsNumber (status))
-    start_time = status->valuedouble;
-
-  if ((status = cJSON_GetObjectItem (parser, "end_time")) != NULL
-      && !cJSON_IsNumber (status))
-    end_time = status->valuedouble;
-
   progress = openvasd_get_scan_progress_ext (NULL, resp);
 
 status_cleanup:
@@ -1451,8 +1439,8 @@ openvasd_parsed_scan_status (openvasd_connector_t conn)
   g_free (status_val);
 
   status_info->status = status_code;
-  status_info->end_time = end_time;
-  status_info->start_time = start_time;
+  status_info->end_time = gvm_json_obj_double (parser, "end_time");
+  status_info->start_time = gvm_json_obj_double (parser, "start_time");
   status_info->progress = progress;
 
   return status_info;
diff --git a/openvasd/vtparser.c b/openvasd/vtparser.c
index 2007598e..ce51499c 100644
--- a/openvasd/vtparser.c
+++ b/openvasd/vtparser.c
@@ -83,13 +83,9 @@ add_tags_to_nvt (nvti_t *nvt, cJSON *tag_obj)
           && cJSON_IsString (item))
         nvti_set_affected (nvt, item->valuestring);
 
-      if ((item = cJSON_GetObjectItem (tag_obj, "creation_date")) != NULL
-          && cJSON_IsNumber (item))
-        nvti_set_creation_time (nvt, item->valuedouble);
+      nvti_set_creation_time (nvt, gvm_json_obj_double (tag_obj, "creation_date"));
 
-      if ((item = cJSON_GetObjectItem (tag_obj, "last_modification")) != NULL
-          && cJSON_IsNumber (item))
-        nvti_set_modification_time (nvt, item->valuedouble);
+      nvti_set_modification_time (nvt, gvm_json_obj_double (tag_obj, "last_modification"));
 
       if ((item = cJSON_GetObjectItem (tag_obj, "insight")) != NULL
           && cJSON_IsString (item))
@@ -150,7 +146,6 @@ add_tags_to_nvt (nvti_t *nvt, cJSON *tag_obj)
           gchar *severity_origin = NULL, *severity_type = NULL;
           gchar *cvss_base;
 
-          time_t severity_date = 0;
           double cvss_base_dbl;
 
           if (g_strrstr (severity_vector, "CVSS:3"))
@@ -160,17 +155,14 @@ add_tags_to_nvt (nvti_t *nvt, cJSON *tag_obj)
 
           cvss_base_dbl = get_cvss_score_from_base_metrics (severity_vector);
 
-          if ((item = cJSON_GetObjectItem (tag_obj, "severity_date")) != NULL
-              && cJSON_IsNumber (item))
-            severity_date = item->valuedouble;
-
           if ((item = cJSON_GetObjectItem (tag_obj, "severity_origin")) != NULL
               && cJSON_IsString (item))
             severity_origin = item->valuestring;
 
-          nvti_add_vtseverity (
-            nvt, vtseverity_new (severity_type, severity_origin, severity_date,
-                                 cvss_base_dbl, severity_vector));
+          nvti_add_vtseverity (nvt,
+                               vtseverity_new (severity_type, severity_origin,
+                                               gvm_json_obj_double (tag_obj, "severity_date"),
+                                               cvss_base_dbl, severity_vector));
 
           nvti_add_tag (nvt, "cvss_base_vector", severity_vector);
 
diff --git a/util/json.c b/util/json.c
index d33a001b..c865b2b9 100644
--- a/util/json.c
+++ b/util/json.c
@@ -62,3 +62,23 @@ gvm_json_string_escape (const char *string, gboolean single_quote)
     }
   return g_string_free (escaped, FALSE);
 }
+
+/**
+ * @brief Get a double field from a JSON object.
+ *
+ * @param[in]  obj  Object
+ * @param[in]  key  Field name.
+ *
+ * @return A double.
+ */
+double
+gvm_json_obj_double (cJSON *obj, const gchar *key)
+{
+  cJSON *item;
+
+  item = cJSON_GetObjectItem (obj, key);
+  if (item && cJSON_IsNumber (item))
+    return item->valuedouble;
+
+  return 0;
+}
diff --git a/util/json.h b/util/json.h
index e72e1fce..277be4db 100644
--- a/util/json.h
+++ b/util/json.h
@@ -15,4 +15,7 @@
 gchar *
 gvm_json_string_escape (const char *, gboolean);
 
+double
+gvm_json_obj_double (cJSON *, const gchar *);
+
 #endif /* _GVM_JSON_H */