diff --git a/2020/5xxx/CVE-2020-5604.json b/2020/5xxx/CVE-2020-5604.json
index def60dd8e36..69fd653efff 100644
--- a/2020/5xxx/CVE-2020-5604.json
+++ b/2020/5xxx/CVE-2020-5604.json
@@ -4,14 +4,55 @@
     "data_version": "4.0",
     "CVE_data_meta": {
         "ID": "CVE-2020-5604",
-        "ASSIGNER": "cve@mitre.org",
-        "STATE": "RESERVED"
+        "ASSIGNER": "vultures@jpcert.or.jp"
+    },
+    "affects": {
+        "vendor": {
+            "vendor_data": [
+                {
+                    "vendor_name": "Mercari, Inc.",
+                    "product": {
+                        "product_data": [
+                            {
+                                "product_name": "Android App 'Mercari' (Japan version)",
+                                "version": {
+                                    "version_data": [
+                                        {
+                                            "version_value": "prior to version 3.52.0"
+                                        }
+                                    ]
+                                }
+                            }
+                        ]
+                    }
+                }
+            ]
+        }
+    },
+    "problemtype": {
+        "problemtype_data": [
+            {
+                "description": [
+                    {
+                        "lang": "eng",
+                        "value": "Exposed Dangerous Method or Function"
+                    }
+                ]
+            }
+        ]
+    },
+    "references": {
+        "reference_data": [
+            {
+                "url": "https://jvn.jp/en/jp/JVN93167107/index.html"
+            }
+        ]
     },
     "description": {
         "description_data": [
             {
                 "lang": "eng",
-                "value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided."
+                "value": "Android App 'Mercari' (Japan version) prior to version 3.52.0 allows arbitrary method execution of a Java object by a remoto attacker via a Man-In-The-Middle attack by using Java Reflection API of JavaScript code on WebView."
             }
         ]
     }