diff --git a/2009/4xxx/CVE-2009-4623.json b/2009/4xxx/CVE-2009-4623.json
index 269a2dd30e5..28098dd19f5 100644
--- a/2009/4xxx/CVE-2009-4623.json
+++ b/2009/4xxx/CVE-2009-4623.json
@@ -34,7 +34,7 @@
         "description_data": [
             {
                 "lang": "eng",
-                "value": "Multiple PHP remote file inclusion vulnerabilities in Advanced Comment System 1.0 allow remote attackers to execute arbitrary PHP code via a URL in the ACS_path parameter to (1) index.php and (2) admin.php in advanced_comment_system/.  NOTE: this might only be a vulnerability when the administrator has not followed installation instructions in install.php."
+                "value": "Multiple PHP remote file inclusion vulnerabilities in Advanced Comment System 1.0 allow remote attackers to execute arbitrary PHP code via a URL in the ACS_path parameter to (1) index.php and (2) admin.php in advanced_comment_system/. NOTE: this might only be a vulnerability when the administrator has not followed installation instructions in install.php. NOTE: this might be the same as CVE-2020-35598."
             }
         ]
     },
diff --git a/2018/11xxx/CVE-2018-11212.json b/2018/11xxx/CVE-2018-11212.json
index 7f9336e5242..f50d8a9a04b 100644
--- a/2018/11xxx/CVE-2018-11212.json
+++ b/2018/11xxx/CVE-2018-11212.json
@@ -34,7 +34,7 @@
         "description_data": [
             {
                 "lang": "eng",
-                "value": "An issue was discovered in libjpeg 9a. The alloc_sarray function in jmemmgr.c allows remote attackers to cause a denial of service (divide-by-zero error) via a crafted file."
+                "value": "An issue was discovered in libjpeg 9a and 9d. The alloc_sarray function in jmemmgr.c allows remote attackers to cause a denial of service (divide-by-zero error) via a crafted file."
             }
         ]
     },
@@ -117,6 +117,11 @@
                 "name": "RHSA-2019:0640",
                 "url": "https://access.redhat.com/errata/RHSA-2019:0640"
             },
+            {
+                "refsource": "MISC",
+                "name": "http://www.ijg.org/",
+                "url": "http://www.ijg.org/"
+            },
             {
                 "refsource": "REDHAT",
                 "name": "RHSA-2019:1238",
@@ -141,6 +146,11 @@
                 "refsource": "CONFIRM",
                 "name": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03958en_us",
                 "url": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03958en_us"
+            },
+            {
+                "refsource": "MISC",
+                "name": "https://github.com/zzyyrr/divide-by-zero-in-libjpeg-9d.git",
+                "url": "https://github.com/zzyyrr/divide-by-zero-in-libjpeg-9d.git"
             }
         ]
     }
diff --git a/2020/35xxx/CVE-2020-35598.json b/2020/35xxx/CVE-2020-35598.json
index cd5c23ce063..30dbc27ef0e 100644
--- a/2020/35xxx/CVE-2020-35598.json
+++ b/2020/35xxx/CVE-2020-35598.json
@@ -34,7 +34,7 @@
         "description_data": [
             {
                 "lang": "eng",
-                "value": "ACS Advanced Comment System 1.0 is affected by Directory Traversal via an advanced_component_system/index.php?ACS_path=..%2f URI."
+                "value": "ACS Advanced Comment System 1.0 is affected by Directory Traversal via an advanced_component_system/index.php?ACS_path=..%2f URI. NOTE: this might be the same as CVE-2009-4623"
             }
         ]
     },
diff --git a/2021/23xxx/CVE-2021-23239.json b/2021/23xxx/CVE-2021-23239.json
new file mode 100644
index 00000000000..3b4fed58c88
--- /dev/null
+++ b/2021/23xxx/CVE-2021-23239.json
@@ -0,0 +1,18 @@
+{
+    "data_type": "CVE",
+    "data_format": "MITRE",
+    "data_version": "4.0",
+    "CVE_data_meta": {
+        "ID": "CVE-2021-23239",
+        "ASSIGNER": "cve@mitre.org",
+        "STATE": "RESERVED"
+    },
+    "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."
+            }
+        ]
+    }
+}
\ No newline at end of file
diff --git a/2021/23xxx/CVE-2021-23240.json b/2021/23xxx/CVE-2021-23240.json
new file mode 100644
index 00000000000..c555cd8f6bc
--- /dev/null
+++ b/2021/23xxx/CVE-2021-23240.json
@@ -0,0 +1,18 @@
+{
+    "data_type": "CVE",
+    "data_format": "MITRE",
+    "data_version": "4.0",
+    "CVE_data_meta": {
+        "ID": "CVE-2021-23240",
+        "ASSIGNER": "cve@mitre.org",
+        "STATE": "RESERVED"
+    },
+    "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."
+            }
+        ]
+    }
+}
\ No newline at end of file