Add Langflow CVE-2026-55447 NVD reference

Author: cookesan

advisories/github-reviewed/2026/06/GHSA-ccv6-r384-xp75/GHSA-ccv6-r384-xp75.json

@@ -40,6 +40,10 @@
       "type": "WEB",
       "url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-ccv6-r384-xp75"
     },
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55447"
+    },
     {
       "type": "WEB",
       "url": "https://github.com/langflow-ai/langflow/pull/12945"
@@ -59,4 +63,4 @@
     "github_reviewed_at": "2026-06-19T21:18:24Z",
     "nvd_published_at": null
   }
-}
+}