diff --git a/2019/11xxx/CVE-2019-11929.json b/2019/11xxx/CVE-2019-11929.json
index a27a11e4bee..71dbb26393b 100644
--- a/2019/11xxx/CVE-2019-11929.json
+++ b/2019/11xxx/CVE-2019-11929.json
@@ -1,17 +1,137 @@
 {
-    "data_type": "CVE",
-    "data_format": "MITRE",
-    "data_version": "4.0",
     "CVE_data_meta": {
+        "ASSIGNER": "cve-assign@fb.com",
+        "DATE_ASSIGNED": "2019-10-02",
         "ID": "CVE-2019-11929",
-        "ASSIGNER": "cve@mitre.org",
-        "STATE": "RESERVED"
+        "STATE": "PUBLIC"
     },
+    "affects": {
+        "vendor": {
+            "vendor_data": [
+                {
+                    "product": {
+                        "product_data": [
+                            {
+                                "product_name": "HHVM",
+                                "version": {
+                                    "version_data": [
+                                        {
+                                            "version_affected": "!=>",
+                                            "version_value": "4.24.0"
+                                        },
+                                        {
+                                            "version_affected": "!=>",
+                                            "version_value": "4.23.2"
+                                        },
+                                        {
+                                            "version_affected": ">=",
+                                            "version_value": "4.23.0"
+                                        },
+                                        {
+                                            "version_affected": "!=>",
+                                            "version_value": "4.22.1"
+                                        },
+                                        {
+                                            "version_affected": ">=",
+                                            "version_value": "4.22.0"
+                                        },
+                                        {
+                                            "version_affected": "!=>",
+                                            "version_value": "4.21.1"
+                                        },
+                                        {
+                                            "version_affected": ">=",
+                                            "version_value": "4.21.0"
+                                        },
+                                        {
+                                            "version_affected": "!=>",
+                                            "version_value": "4.20.3"
+                                        },
+                                        {
+                                            "version_affected": ">=",
+                                            "version_value": "4.20.0"
+                                        },
+                                        {
+                                            "version_affected": "!=>",
+                                            "version_value": "4.19.2"
+                                        },
+                                        {
+                                            "version_affected": ">=",
+                                            "version_value": "4.19.0"
+                                        },
+                                        {
+                                            "version_affected": "!=>",
+                                            "version_value": "4.18.3"
+                                        },
+                                        {
+                                            "version_affected": ">=",
+                                            "version_value": "4.9.0"
+                                        },
+                                        {
+                                            "version_affected": "!=>",
+                                            "version_value": "4.8.5"
+                                        },
+                                        {
+                                            "version_affected": ">=",
+                                            "version_value": "4.0.0"
+                                        },
+                                        {
+                                            "version_affected": "!=>",
+                                            "version_value": "3.30.11"
+                                        },
+                                        {
+                                            "version_affected": "<=",
+                                            "version_value": "3.30.10"
+                                        }
+                                    ]
+                                }
+                            }
+                        ]
+                    },
+                    "vendor_name": "Facebook"
+                }
+            ]
+        }
+    },
+    "data_format": "MITRE",
+    "data_type": "CVE",
+    "data_version": "4.0",
     "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": "Insufficient boundary checks when formatting numbers in number_format allows read/write access to out-of-bounds memory, potentially leading to remote code execution. This issue affects HHVM versions prior to 3.30.10, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.18.2, and versions 4.19.0, 4.19.1, 4.20.0, 4.20.1, 4.20.2, 4.21.0, 4.22.0, 4.23.0."
+            }
+        ]
+    },
+    "problemtype": {
+        "problemtype_data": [
+            {
+                "description": [
+                    {
+                        "lang": "eng",
+                        "value": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer"
+                    }
+                ]
+            }
+        ]
+    },
+    "references": {
+        "reference_data": [
+            {
+                "refsource": "CONFIRM",
+                "name": "https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692",
+                "url": "https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692"
+            },
+            {
+                "refsource": "CONFIRM",
+                "name": "https://hhvm.com/blog/2019/09/25/security-update.html",
+                "url": "https://hhvm.com/blog/2019/09/25/security-update.html"
+            },
+            {
+                "refsource": "CONFIRM",
+                "name": "https://www.facebook.com/security/advisories/cve-2019-11929",
+                "url": "https://www.facebook.com/security/advisories/cve-2019-11929"
             }
         ]
     }