diff --git a/2020/5xxx/CVE-2020-5590.json b/2020/5xxx/CVE-2020-5590.json
index 8aafad9e87d..746880b126d 100644
--- a/2020/5xxx/CVE-2020-5590.json
+++ b/2020/5xxx/CVE-2020-5590.json
@@ -4,14 +4,61 @@
     "data_version": "4.0",
     "CVE_data_meta": {
         "ID": "CVE-2020-5590",
-        "ASSIGNER": "cve@mitre.org",
-        "STATE": "RESERVED"
+        "ASSIGNER": "vultures@jpcert.or.jp"
+    },
+    "affects": {
+        "vendor": {
+            "vendor_data": [
+                {
+                    "vendor_name": "EC-CUBE CO.,LTD.",
+                    "product": {
+                        "product_data": [
+                            {
+                                "product_name": "EC-CUBE",
+                                "version": {
+                                    "version_data": [
+                                        {
+                                            "version_value": "3.0.0 to 3.0.18 and 4.0.0 to 4.0.3"
+                                        }
+                                    ]
+                                }
+                            }
+                        ]
+                    }
+                }
+            ]
+        }
+    },
+    "problemtype": {
+        "problemtype_data": [
+            {
+                "description": [
+                    {
+                        "lang": "eng",
+                        "value": "Directory traversal"
+                    }
+                ]
+            }
+        ]
+    },
+    "references": {
+        "reference_data": [
+            {
+                "url": "https://www.ec-cube.net/info/weakness/weakness.php?id=73"
+            },
+            {
+                "url": "https://www.ec-cube.net/info/weakness/weakness.php?id=74"
+            },
+            {
+                "url": "https://jvn.jp/en/jp/JVN77458946/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": "Directory traversal vulnerability in EC-CUBE 3.0.0 to 3.0.18 and 4.0.0 to 4.0.3 allows remote authenticated attackers to delete arbitrary files and/or directories on the server via unspecified vectors."
             }
         ]
     }