diff --git a/jetlinks-components/notify-component/notify-webhook/src/main/java/org/jetlinks/community/notify/webhook/http/HttpWebHookNotifier.java b/jetlinks-components/notify-component/notify-webhook/src/main/java/org/jetlinks/community/notify/webhook/http/HttpWebHookNotifier.java
index 555fc5c9e..adc1d04f2 100644
--- a/jetlinks-components/notify-component/notify-webhook/src/main/java/org/jetlinks/community/notify/webhook/http/HttpWebHookNotifier.java
+++ b/jetlinks-components/notify-component/notify-webhook/src/main/java/org/jetlinks/community/notify/webhook/http/HttpWebHookNotifier.java
@@ -29,6 +29,7 @@
 import reactor.core.publisher.Mono;
 
 import javax.annotation.Nonnull;
+import java.net.URI;
 
 public class HttpWebHookNotifier extends AbstractNotifier<HttpWebHookTemplate> {
     private final String id;
@@ -73,7 +74,7 @@ public Mono<Void> send(@Nonnull HttpWebHookTemplate template,
             .method(template.getMethod());
 
         if (StringUtils.hasText(template.getUrl())) {
-            bodyUriSpec.uri(template.getUrl());
+            bodyUriSpec.uri(resolveTemplateUri(template.getUrl()));
         }
         if (method == HttpMethod.POST
             || method == HttpMethod.PUT
@@ -103,6 +104,15 @@ public Mono<Void> send(@Nonnull HttpWebHookTemplate template,
             .bodyToMono(Void.class);
     }
 
+    URI resolveTemplateUri(String url) {
+        URI uri = URI.create(url);
+        // 模板只能补充相对路径，目标主机始终由具有配置权限的通知器配置决定。
+        if (uri.isAbsolute() || uri.getHost() != null || url.startsWith("//")) {
+            throw new IllegalArgumentException("WebHook template URL must be relative");
+        }
+        return uri;
+    }
+
     @Nonnull
     @Override
     public Mono<Void> close() {
diff --git a/jetlinks-components/notify-component/notify-webhook/src/test/java/org/jetlinks/community/notify/webhook/http/HttpWebHookNotifierTest.java b/jetlinks-components/notify-component/notify-webhook/src/test/java/org/jetlinks/community/notify/webhook/http/HttpWebHookNotifierTest.java
new file mode 100644
index 000000000..e118be5cf
--- /dev/null
+++ b/jetlinks-components/notify-component/notify-webhook/src/test/java/org/jetlinks/community/notify/webhook/http/HttpWebHookNotifierTest.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2026 JetLinks https://www.jetlinks.cn
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetlinks.community.notify.webhook.http;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.web.reactive.function.client.WebClient;
+
+import java.net.URI;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.mockito.Mockito.mock;
+
+class HttpWebHookNotifierTest {
+
+    private final HttpWebHookNotifier notifier = new HttpWebHookNotifier(
+        "test",
+        new HttpWebHookProperties(),
+        WebClient.builder().baseUrl("https://example.com/api").build(),
+        mock(org.jetlinks.community.notify.template.TemplateManager.class)
+    );
+
+    @Test
+    void shouldAcceptRelativeTemplateUrl() {
+        assertEquals(URI.create("events/device-1"), notifier.resolveTemplateUri("events/device-1"));
+    }
+
+    @Test
+    void shouldRejectAbsoluteTemplateUrl() {
+        assertThrows(
+            IllegalArgumentException.class,
+            () -> notifier.resolveTemplateUri("http://127.0.0.1/internal")
+        );
+        assertThrows(
+            IllegalArgumentException.class,
+            () -> notifier.resolveTemplateUri("//127.0.0.1/internal")
+        );
+    }
+}