diff --git a/UNDF-REGISTRY.json b/UNDF-REGISTRY.json
index 54930ad56..fd27d193d 100644
--- a/UNDF-REGISTRY.json
+++ b/UNDF-REGISTRY.json
@@ -855,5 +855,6 @@
   "gitlab-foss-0002": "UNDF-2026-000000854",
   "gitlab-foss-0003": "UNDF-2026-000000855",
   "gitlab-foss-0004": "UNDF-2026-000000856",
-  "gitlab-foss-0005": "UNDF-2026-000000857"
+  "gitlab-foss-0005": "UNDF-2026-000000857",
+  "proxysql-0001": "UNDF-2026-000000858"
 }
diff --git a/defects/proxysql/patch/proxysql-0001-connpool-metrics-stale-server-scan.patch b/defects/proxysql/patch/proxysql-0001-connpool-metrics-stale-server-scan.patch
index b1d097681..15044ebce 100644
--- a/defects/proxysql/patch/proxysql-0001-connpool-metrics-stale-server-scan.patch
+++ b/defects/proxysql/patch/proxysql-0001-connpool-metrics-stale-server-scan.patch
@@ -1,3 +1,4 @@
+# UNDF: UNDF-2026-000000858
 # UNDF: (leave blank)
 # CWE-407: Algorithmic Complexity — connection pool metrics cleanup vector linear scan
 # Severity: MEDIUM