From d97d91801d5e2c890cb9d3d7a189bbe327650969 Mon Sep 17 00:00:00 2001
From: sagitchu <sagitchu@gmail.com>
Date: Fri, 1 May 2026 23:50:41 +0800
Subject: [PATCH] fix: reject leading zero probe IPv4

---
 vite-frontend/src/pages/tunnel/form.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/vite-frontend/src/pages/tunnel/form.ts b/vite-frontend/src/pages/tunnel/form.ts
index e6b636c..334527d 100644
--- a/vite-frontend/src/pages/tunnel/form.ts
+++ b/vite-frontend/src/pages/tunnel/form.ts
@@ -26,6 +26,9 @@ const isValidProbeIPv4 = (host: string) => {
       if (!/^\d+$/.test(part)) {
         return false;
       }
+      if (part.length > 1 && part.startsWith("0")) {
+        return false;
+      }
 
       const value = Number(part);