diff --git a/2018/18xxx/CVE-2018-18849.json b/2018/18xxx/CVE-2018-18849.json
new file mode 100644
index 00000000000..21702451be9
--- /dev/null
+++ b/2018/18xxx/CVE-2018-18849.json
@@ -0,0 +1,18 @@
+{
+   "CVE_data_meta" : {
+      "ASSIGNER" : "cve@mitre.org",
+      "ID" : "CVE-2018-18849",
+      "STATE" : "RESERVED"
+   },
+   "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."
+         }
+      ]
+   }
+}
diff --git a/2018/18xxx/CVE-2018-18850.json b/2018/18xxx/CVE-2018-18850.json
new file mode 100644
index 00000000000..72c9f1d92f2
--- /dev/null
+++ b/2018/18xxx/CVE-2018-18850.json
@@ -0,0 +1,62 @@
+{
+   "CVE_data_meta" : {
+      "ASSIGNER" : "cve@mitre.org",
+      "ID" : "CVE-2018-18850",
+      "STATE" : "PUBLIC"
+   },
+   "affects" : {
+      "vendor" : {
+         "vendor_data" : [
+            {
+               "product" : {
+                  "product_data" : [
+                     {
+                        "product_name" : "n/a",
+                        "version" : {
+                           "version_data" : [
+                              {
+                                 "version_value" : "n/a"
+                              }
+                           ]
+                        }
+                     }
+                  ]
+               },
+               "vendor_name" : "n/a"
+            }
+         ]
+      }
+   },
+   "data_format" : "MITRE",
+   "data_type" : "CVE",
+   "data_version" : "4.0",
+   "description" : {
+      "description_data" : [
+         {
+            "lang" : "eng",
+            "value" : "In Octopus Deploy 2018.8.0 through 2018.9.x before 2018.9.1, an authenticated user with permission to modify deployment processes could upload a maliciously crafted YAML configuration, potentially allowing for remote execution of arbitrary code, running in the same context as the Octopus Server (for self-hosted installations by default, SYSTEM)."
+         }
+      ]
+   },
+   "problemtype" : {
+      "problemtype_data" : [
+         {
+            "description" : [
+               {
+                  "lang" : "eng",
+                  "value" : "n/a"
+               }
+            ]
+         }
+      ]
+   },
+   "references" : {
+      "reference_data" : [
+         {
+            "name" : "https://github.com/OctopusDeploy/Issues/issues/5042",
+            "refsource" : "MISC",
+            "url" : "https://github.com/OctopusDeploy/Issues/issues/5042"
+         }
+      ]
+   }
+}
diff --git a/2018/18xxx/CVE-2018-18851.json b/2018/18xxx/CVE-2018-18851.json
new file mode 100644
index 00000000000..34cbb5ba6a3
--- /dev/null
+++ b/2018/18xxx/CVE-2018-18851.json
@@ -0,0 +1,18 @@
+{
+   "CVE_data_meta" : {
+      "ASSIGNER" : "cve@mitre.org",
+      "ID" : "CVE-2018-18851",
+      "STATE" : "RESERVED"
+   },
+   "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."
+         }
+      ]
+   }
+}
diff --git a/2018/18xxx/CVE-2018-18852.json b/2018/18xxx/CVE-2018-18852.json
new file mode 100644
index 00000000000..1d76ab434d0
--- /dev/null
+++ b/2018/18xxx/CVE-2018-18852.json
@@ -0,0 +1,18 @@
+{
+   "CVE_data_meta" : {
+      "ASSIGNER" : "cve@mitre.org",
+      "ID" : "CVE-2018-18852",
+      "STATE" : "RESERVED"
+   },
+   "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."
+         }
+      ]
+   }
+}