diff --git a/frontend/src/api/queries/useHostMutations.ts b/frontend/src/api/queries/useHostMutations.ts
index dfac21944..a71697f6d 100644
--- a/frontend/src/api/queries/useHostMutations.ts
+++ b/frontend/src/api/queries/useHostMutations.ts
@@ -20,14 +20,19 @@ export function useHostMutations() {
 
   const updateMut = useMutation({
     mutationFn: ({ groupId, payload }: { groupId: string; payload: BulkAddHostValues }) =>
-      HttpUtil.post(`/panel/api/hosts/update/${groupId}`, payload, JSON_HEADERS),
+      HttpUtil.post(
+        `/panel/api/hosts/update/${encodeURIComponent(groupId)}`,
+        payload,
+        JSON_HEADERS,
+      ),
     onSuccess: (msg) => {
       if (msg?.success) invalidate();
     },
   });
 
   const removeMut = useMutation({
-    mutationFn: (groupId: string) => HttpUtil.post(`/panel/api/hosts/del/${groupId}`),
+    mutationFn: (groupId: string) =>
+      HttpUtil.post(`/panel/api/hosts/del/${encodeURIComponent(groupId)}`),
     onSuccess: (msg) => {
       if (msg?.success) invalidate();
     },
@@ -35,7 +40,7 @@ export function useHostMutations() {
 
   const setEnableMut = useMutation({
     mutationFn: ({ groupId, enable }: { groupId: string; enable: boolean }) =>
-      HttpUtil.post(`/panel/api/hosts/setEnable/${groupId}`, { enable }),
+      HttpUtil.post(`/panel/api/hosts/setEnable/${encodeURIComponent(groupId)}`, { enable }),
     onSuccess: (msg) => {
       if (msg?.success) invalidate();
     },
diff --git a/frontend/src/pages/inbounds/info/InboundInfoModal.tsx b/frontend/src/pages/inbounds/info/InboundInfoModal.tsx
index 4e5554f82..299bf688d 100644
--- a/frontend/src/pages/inbounds/info/InboundInfoModal.tsx
+++ b/frontend/src/pages/inbounds/info/InboundInfoModal.tsx
@@ -69,7 +69,9 @@ export default function InboundInfoModal({
     if (!clientStats?.email) return;
     setRefreshing(true);
     try {
-      const msg = await HttpUtil.post(`/panel/api/clients/ips/${clientStats.email}`);
+      const msg = await HttpUtil.post(
+        `/panel/api/clients/ips/${encodeURIComponent(clientStats.email)}`,
+      );
       if (!msg?.success) {
         setClientIpsText((msg?.obj as string) || 'No IP record');
         setClientIpsArray([]);
@@ -101,7 +103,9 @@ export default function InboundInfoModal({
 
   const clearClientIps = useCallback(async () => {
     if (!clientStats?.email) return;
-    const msg = await HttpUtil.post(`/panel/api/clients/clearIps/${clientStats.email}`);
+    const msg = await HttpUtil.post(
+      `/panel/api/clients/clearIps/${encodeURIComponent(clientStats.email)}`,
+    );
     if (msg?.success) {
       setClientIpsArray([]);
       setClientIpsText(t('tgbot.noIpRecord'));
@@ -223,7 +227,8 @@ export default function InboundInfoModal({
     setClientIpsText('');
 
     if (ipLimitEnable && (clientSet?.limitIp ?? 0) > 0 && stats?.email) {
-      void HttpUtil.post(`/panel/api/clients/ips/${stats.email}`).then((msg) => {
+      const email = encodeURIComponent(stats.email);
+      void HttpUtil.post(`/panel/api/clients/ips/${email}`).then((msg) => {
         if (!msg?.success) {
           setClientIpsText((msg?.obj as string) || 'No IP record');
           return;
diff --git a/frontend/src/test/node-reported-url-segments.test.tsx b/frontend/src/test/node-reported-url-segments.test.tsx
new file mode 100644
index 000000000..f1dc24fcd
--- /dev/null
+++ b/frontend/src/test/node-reported-url-segments.test.tsx
@@ -0,0 +1,63 @@
+import type { ReactNode } from 'react';
+import { act, render, renderHook } from '@testing-library/react';
+import { QueryClientProvider } from '@tanstack/react-query';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { useHostMutations } from '@/api/queries/useHostMutations';
+import { BulkAddHostSchema } from '@/schemas/api/host';
+import { DBInbound } from '@/models/dbinbound';
+import InboundInfoModal from '@/pages/inbounds/info/InboundInfoModal';
+import { makeTestQueryClient } from '@/test/test-utils';
+import { HttpUtil } from '@/utils';
+
+// Client emails and host group ids adopted from a node skip the panel's own
+// character rules: unencoded, "../" and "?" re-target the admin's POST.
+const hostile = '../../setting/update?tgBotEnable=true';
+const encoded = encodeURIComponent(hostile);
+
+describe('node-reported values stay one URL path segment', () => {
+  const post = vi.mocked(HttpUtil.post);
+
+  beforeEach(() => {
+    post.mockClear();
+  });
+
+  it('encodes the client email in the inbound info IP-log request', () => {
+    const dbInbound = new DBInbound({
+      id: 2,
+      protocol: 'http',
+      port: 44301,
+      settings: JSON.stringify({ clients: [{ email: hostile, enable: true, limitIp: 1 }] }),
+      streamSettings: JSON.stringify({ network: 'tcp', security: 'none' }),
+      sniffing: '',
+      clientStats: [{ email: hostile, enable: true, up: 1, down: 1, total: 0, expiryTime: 0 }],
+    });
+
+    render(<InboundInfoModal open onClose={() => {}} dbInbound={dbInbound} ipLimitEnable />);
+
+    expect(post).toHaveBeenCalledWith(`/panel/api/clients/ips/${encoded}`);
+  });
+
+  it('encodes the host group id in the host mutations', async () => {
+    const queryClient = makeTestQueryClient();
+    const wrapper = ({ children }: { children: ReactNode }) => (
+      <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
+    );
+    const { result } = renderHook(() => useHostMutations(), { wrapper });
+
+    await act(async () => {
+      await result.current.update(
+        hostile,
+        BulkAddHostSchema.parse({ inboundIds: [1], remark: 'cdn' }),
+      );
+      await result.current.setEnable(hostile, false);
+      await result.current.remove(hostile);
+    });
+
+    expect(post.mock.calls.map(([url]) => url)).toEqual([
+      `/panel/api/hosts/update/${encoded}`,
+      `/panel/api/hosts/setEnable/${encoded}`,
+      `/panel/api/hosts/del/${encoded}`,
+    ]);
+  });
+});