diff --git a/advisories/github-reviewed/2025/04/GHSA-223j-4rm8-mrmf/GHSA-223j-4rm8-mrmf.json b/advisories/github-reviewed/2025/04/GHSA-223j-4rm8-mrmf/GHSA-223j-4rm8-mrmf.json
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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-223j-4rm8-mrmf",
+  "modified": "2025-04-02T22:35:38Z",
+  "published": "2025-04-02T22:35:37Z",
+  "aliases": [
+    "CVE-2025-30218"
+  ],
+  "summary": "Next.js may leak x-middleware-subrequest-id to external hosts",
+  "details": "## Summary\nIn the process of remediating [CVE-2025-29927](https://github.com/advisories/GHSA-f82v-jwr5-mffw), we looked at other possible exploits of Middleware. We independently verified this low severity vulnerability in parallel with two reports from independent researchers.\n\nLearn more [here](https://vercel.com/changelog/cve-2025-30218-5DREmEH765PoeAsrNNQj3O).\n\n## Credit\n\nThank you to Jinseo Kim [kjsman](https://hackerone.com/kjsman?type=user) and [ryotak](https://hackerone.com/ryotak?type=user) for the responsible disclosure. These researchers were awarded as part of our bug bounty program.",
+  "severity": [
+    {
+      "type": "CVSS_V4",
+      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "next"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "12.3.5"
+            },
+            {
+              "fixed": "12.3.6"
+            }
+          ]
+        }
+      ],
+      "versions": [
+        "12.3.5"
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "next"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "13.5.9"
+            },
+            {
+              "fixed": "13.5.10"
+            }
+          ]
+        }
+      ],
+      "versions": [
+        "13.5.9"
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "next"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "14.2.25"
+            },
+            {
+              "fixed": "14.2.26"
+            }
+          ]
+        }
+      ],
+      "versions": [
+        "14.2.25"
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "next"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "15.2.3"
+            },
+            {
+              "fixed": "15.2.4"
+            }
+          ]
+        }
+      ],
+      "versions": [
+        "15.2.3"
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/vercel/next.js/security/advisories/GHSA-223j-4rm8-mrmf"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/vercel/next.js"
+    },
+    {
+      "type": "WEB",
+      "url": "https://vercel.com/changelog/cve-2025-30218-5DREmEH765PoeAsrNNQj3O"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-200"
+    ],
+    "severity": "LOW",
+    "github_reviewed": true,
+    "github_reviewed_at": "2025-04-02T22:35:37Z",
+    "nvd_published_at": null
+  }
+}
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