diff --git a/scripts/check-native-shells.mjs b/scripts/check-native-shells.mjs
index 4ae46e55e..70dab7944 100644
--- a/scripts/check-native-shells.mjs
+++ b/scripts/check-native-shells.mjs
@@ -1080,6 +1080,19 @@ function assertH5HostBridgePayloadBoundaries() {
       'H5 HostBridge facade must normalize app.openExternalUrl payloads with the shared external URL boundary',
     );
   }
+  if (
+    !h5HostBridgeSource.includes('function normalizeNativeAppPageUrl(url: string)') ||
+    !h5HostBridgeSource.includes("trimmedUrl.startsWith('//')") ||
+    !h5HostBridgeSource.includes(
+      "nativePageUrl.origin !== HOST_BRIDGE_PUBLIC_WEB_ORIGIN",
+    ) ||
+    !h5HostBridgeSource.includes('const normalizedUrl = normalizeNativeAppPageUrl(url);') ||
+    !h5HostBridgeSource.includes("{ url: normalizedUrl },")
+  ) {
+    throw new Error(
+      'H5 HostBridge facade must reject unsafe native app navigation targets before sending navigation.openNativePage',
+    );
+  }
   if (
     !h5HostBridgeSource.includes(
       'absolutizeHostSharePayloadUrls(params),',
diff --git a/src/services/host-bridge/hostBridge.test.ts b/src/services/host-bridge/hostBridge.test.ts
index 54bfd6ad6..fb1ef6a8f 100644
--- a/src/services/host-bridge/hostBridge.test.ts
+++ b/src/services/host-bridge/hostBridge.test.ts
@@ -1346,6 +1346,69 @@ describe('hostBridge', () => {
     });
   });
 
+  test('原生 App 宿主导航请求发送前先拒绝明显不安全目标', async () => {
+    const invoke = vi.fn(async (_command: string, args?: Record<string, unknown>) => {
+      const request = (args as { request: { id: string } }).request;
+      return {
+        bridge: 'GenarrativeHostBridge',
+        version: 1,
+        id: request.id,
+        ok: true,
+        result: true,
+      };
+    });
+    window.history.replaceState(
+      null,
+      '',
+      nativeAppPath(['navigation.openNativePage']),
+    );
+    window.__TAURI__ = {
+      core: {
+        invoke: asTauriInvoke(invoke),
+      },
+    };
+
+    await expect(
+      navigateHostNativePage('https://example.com/works/detail?work=PZ-1'),
+    ).resolves.toBe(false);
+    await expect(
+      navigateHostNativePage('//example.com/works/detail?work=PZ-1'),
+    ).resolves.toBe(false);
+    await expect(
+      navigateHostNativePage('javascript:alert(1)'),
+    ).resolves.toBe(false);
+    await expect(
+      navigateHostNativePage('https://app.genarrative.world/\nnext'),
+    ).resolves.toBe(false);
+    expect(invoke).not.toHaveBeenCalled();
+
+    await expect(
+      navigateHostNativePage(
+        'https://app.genarrative.world/works/detail?work=PZ-1',
+      ),
+    ).resolves.toBe(true);
+    await expect(
+      navigateHostNativePage('works/detail?work=PZ-2'),
+    ).resolves.toBe(true);
+
+    expect(invoke).toHaveBeenCalledWith('host_bridge_request', {
+      request: expect.objectContaining({
+        method: 'navigation.openNativePage',
+        payload: {
+          url: 'https://app.genarrative.world/works/detail?work=PZ-1',
+        },
+      }),
+    });
+    expect(invoke).toHaveBeenCalledWith('host_bridge_request', {
+      request: expect.objectContaining({
+        method: 'navigation.openNativePage',
+        payload: {
+          url: 'works/detail?work=PZ-2',
+        },
+      }),
+    });
+  });
+
   test('原生 App HostBridge 写剪贴板前按共享边界截断文本', async () => {
     const invoke = vi.fn(
       async (_command: string, args?: Record<string, unknown>) => {
diff --git a/src/services/host-bridge/hostBridge.ts b/src/services/host-bridge/hostBridge.ts
index 54eebcaff..59c9fc2d8 100644
--- a/src/services/host-bridge/hostBridge.ts
+++ b/src/services/host-bridge/hostBridge.ts
@@ -508,9 +508,13 @@ export async function navigateHostNativePage(
     if (!canUseNativeHostCapability('navigation.openNativePage')) {
       return false;
     }
+    const normalizedUrl = normalizeNativeAppPageUrl(url);
+    if (!normalizedUrl) {
+      return false;
+    }
     const result = await requestNativeHostBoolean(
       'navigation.openNativePage',
-      { url },
+      { url: normalizedUrl },
     );
     if (result) {
       options.beforeNavigate?.();
@@ -604,6 +608,37 @@ function buildAbsoluteUrl(value: string) {
   return new URL(value, window.location.origin).href;
 }
 
+function normalizeNativeAppPageUrl(url: string) {
+  const trimmedUrl = url.trim();
+  if (!trimmedUrl || /[\u0000-\u001f\u007f]/u.test(trimmedUrl)) {
+    return null;
+  }
+
+  if (trimmedUrl.startsWith('//')) {
+    return null;
+  }
+
+  if (/^[a-z][a-z0-9+.-]*:/i.test(trimmedUrl)) {
+    try {
+      const nativePageUrl = new URL(trimmedUrl);
+      if (
+        nativePageUrl.protocol !== 'http:' &&
+        nativePageUrl.protocol !== 'https:'
+      ) {
+        return null;
+      }
+      if (nativePageUrl.origin !== HOST_BRIDGE_PUBLIC_WEB_ORIGIN) {
+        return null;
+      }
+      return nativePageUrl.toString();
+    } catch {
+      return null;
+    }
+  }
+
+  return trimmedUrl;
+}
+
 function normalizeHostExternalUrlPayload(url: string) {
   const trimmedUrl = url.trim();
   if (!trimmedUrl) {