diff --git a/advisories/github-reviewed/2024/01/GHSA-8g9c-28fc-mcx2/GHSA-8g9c-28fc-mcx2.json b/advisories/github-reviewed/2024/01/GHSA-8g9c-28fc-mcx2/GHSA-8g9c-28fc-mcx2.json
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+++ b/advisories/github-reviewed/2024/01/GHSA-8g9c-28fc-mcx2/GHSA-8g9c-28fc-mcx2.json
@@ -0,0 +1,164 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-8g9c-28fc-mcx2",
+  "modified": "2024-01-09T18:28:03Z",
+  "published": "2024-01-09T18:28:03Z",
+  "aliases": [
+    "CVE-2024-21319"
+  ],
+  "summary": "Microsoft Identity Denial of service vulnerability",
+  "details": "### Impact\n_What kind of vulnerability is it? Who is impacted?_\nAn attacker could exploit this vulnerability by crafting a malicious JSON Web Encryption (JWE) token with a high compression ratio. This token, when processed by a server, leads to excessive memory allocation and processing time during decompression, causing a denial-of-service (DoS) condition.\n\nIt's important to note that the attacker must have access to the public encrypt key registered with the IDP(Entra ID) for successful exploitation.\n\n_According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?_\nA scope change (S:C) in the CVSS metric indicates that successful exploitation of this vulnerability could extend beyond the immediate processing of malicious tokens, affecting the overall availability of the system by causing a denial-of-service (DoS) condition.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\nThe vulnerability has been fixed. Users should update **all** their Microsoft.IdentityModel versions to 7.1.2 (for 7x) or higher, 6.34.0 (for 6x) or higher, and 5.7.0 (for 5x).\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\nNo, users must upgrade.\n\n### References\n_Are there any links users can visit to find out more?_\nhttps://aka.ms/IdentityModel/Jan2024/zip",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "NuGet",
+        "name": "Microsoft.IdentityModel.JsonWebTokens"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "5.7.0"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "NuGet",
+        "name": "Microsoft.IdentityModel.JsonWebTokens"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "6.5.0"
+            },
+            {
+              "fixed": "6.34.0"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "NuGet",
+        "name": "Microsoft.IdentityModel.JsonWebTokens"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "7.0.0-preview"
+            },
+            {
+              "fixed": "7.1.2"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "NuGet",
+        "name": "System.IdentityModel.Tokens.Jwt"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "5.7.0"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "NuGet",
+        "name": "System.IdentityModel.Tokens.Jwt"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "6.5.0"
+            },
+            {
+              "fixed": "6.34.0"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "NuGet",
+        "name": "System.IdentityModel.Tokens.Jwt"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "7.0.0-preview"
+            },
+            {
+              "fixed": "7.1.2"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/security/advisories/GHSA-8g9c-28fc-mcx2"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/5.7.0"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/6.34.0"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/7.1.2"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2024-01-09T18:28:03Z",
+    "nvd_published_at": null
+  }
+}
\ No newline at end of file