diff --git a/packages/core/package.json b/packages/core/package.json
index 7dc33cc78a..e7ddf8f25b 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -55,10 +55,10 @@
     "fast-glob": "catalog:",
     "file-type": "16.5.4",
     "form-data": "catalog:",
+    "htmlparser2": "^10.0.0",
     "http-proxy-agent": "catalog:",
     "https-proxy-agent": "catalog:",
     "iconv-lite": "catalog:",
-    "jsdom": "23.0.1",
     "jsonwebtoken": "catalog:",
     "lodash": "catalog:",
     "luxon": "catalog:",
diff --git a/packages/core/src/__tests__/html-sandbox.test.ts b/packages/core/src/__tests__/html-sandbox.test.ts
index d93a9e8bf4..2194de2fbd 100644
--- a/packages/core/src/__tests__/html-sandbox.test.ts
+++ b/packages/core/src/__tests__/html-sandbox.test.ts
@@ -6,6 +6,7 @@ import { Readable } from 'stream';
 import {
 	bufferEscapeHtml,
 	createHtmlSandboxTransformStream,
+	hasHtml,
 	isHtmlRenderedContentType,
 	sandboxHtmlResponse,
 } from '../html-sandbox';
@@ -373,3 +374,21 @@ describe('sandboxHtmlResponse > sandboxing disabled', () => {
 		expect(sandboxHtmlResponse(data)).toEqual(data);
 	});
 });
+
+describe('hasHtml', () => {
+	test('returns true for valid HTML', () => {
+		expect(hasHtml('<p>Hello</p>')).toBe(true);
+	});
+
+	test('returns true for malformed but still HTML-like content', () => {
+		expect(hasHtml('<div><span>Test')).toBe(true);
+	});
+
+	test('returns false for plain text', () => {
+		expect(hasHtml('Just a string')).toBe(false);
+	});
+
+	test('returns false for empty string', () => {
+		expect(hasHtml('')).toBe(false);
+	});
+});
diff --git a/packages/core/src/html-sandbox.ts b/packages/core/src/html-sandbox.ts
index db55546b3f..5b8402558e 100644
--- a/packages/core/src/html-sandbox.ts
+++ b/packages/core/src/html-sandbox.ts
@@ -1,6 +1,6 @@
 import { SecurityConfig } from '@n8n/config';
 import { Container } from '@n8n/di';
-import { JSDOM } from 'jsdom';
+import { ElementType, parseDocument } from 'htmlparser2';
 import type { TransformCallback } from 'stream';
 import { Transform } from 'stream';
 
@@ -13,10 +13,8 @@ export const isIframeSandboxDisabled = () => {
  */
 export const hasHtml = (str: string) => {
 	try {
-		const dom = new JSDOM(str);
-		return (
-			dom.window.document.body.children.length > 0 || dom.window.document.head.children.length > 0
-		);
+		const doc = parseDocument(str);
+		return doc.children.some((node) => node.type === ElementType.Tag);
 	} catch {
 		return false;
 	}
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2843b76297..8f8c167dba 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1810,6 +1810,9 @@ importers:
       form-data:
         specifier: 4.0.4
         version: 4.0.4
+      htmlparser2:
+        specifier: ^10.0.0
+        version: 10.0.0
       http-proxy-agent:
         specifier: 'catalog:'
         version: 7.0.2
@@ -1819,9 +1822,6 @@ importers:
       iconv-lite:
         specifier: 'catalog:'
         version: 0.6.3
-      jsdom:
-        specifier: 23.0.1
-        version: 23.0.1
       jsonwebtoken:
         specifier: 'catalog:'
         version: 9.0.2
@@ -9778,6 +9778,9 @@ packages:
   domutils@3.1.0:
     resolution: {integrity: sha512-H78uMmQtI2AhgDJjWeQmHwJJ2bLPD3GMmO7Zja/ZZh84wkm+4ut+IUnUdRa8uCGX88DiVx1j6FRe1XfxEgjEZA==}
 
+  domutils@3.2.2:
+    resolution: {integrity: sha512-6kZKyUajlDuqlHKVX1w7gyslj9MPIXzIFiz/rGu35uC1wMi+kMhQwGhl4lt9unC9Vb9INnY9Z3/ZA3+FhASLaw==}
+
   dot-case@3.0.4:
     resolution: {integrity: sha512-Kv5nKlh6yRrdrGvxeJ2e5y2eRUpkUosIW4A2AS38zwSz27zu7ufDwQPi5Jhs3XAlGNetl3bmnGhQsMtkKJnj3w==}
 
@@ -9898,14 +9901,14 @@ packages:
     resolution: {integrity: sha512-WiyBqoomrwMdFG1e0kqvASYfnlb0lp8M5o5Fw2OFq1hNZxxcNk8Ik0Xm7LxzBhuidnZB/UtBqVCgUz3kBOP51Q==}
     engines: {node: '>=0.12'}
 
-  entities@4.4.0:
-    resolution: {integrity: sha512-oYp7156SP8LkeGD0GF85ad1X9Ai79WtRsZ2gxJqtBuzH+98YUV6jkHEKlZkMbcrjJjIVJNIDP/3WL9wQkoPbWA==}
-    engines: {node: '>=0.12'}
-
   entities@4.5.0:
     resolution: {integrity: sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==}
     engines: {node: '>=0.12'}
 
+  entities@6.0.1:
+    resolution: {integrity: sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==}
+    engines: {node: '>=0.12'}
+
   env-paths@2.2.1:
     resolution: {integrity: sha512-+h1lkLKhZMTYjog1VEpJNG7NZJWcuc2DDk/qsqSTRRCOXiLjeQ1d1/udrUGhqMxUgAlwKNZ0cf2uqan5GLuS2A==}
     engines: {node: '>=6'}
@@ -11014,6 +11017,9 @@ packages:
     resolution: {integrity: sha512-qY60FjREgVZL03vJU6IfMV4GDjGBIoOyvuFdpBDIX9yTlDw0TjxVBQp+P8NvpdIXNJvfWBTNul7fsAQJq2FNpg==}
     engines: {node: '>=14'}
 
+  htmlparser2@10.0.0:
+    resolution: {integrity: sha512-TwAZM+zE5Tq3lrEHvOlvwgj1XLWQCtaaibSN11Q+gGBAS7Y1uZSWwXXRe4iF6OXnaq1riyQAPFOBtYc77Mxq0g==}
+
   htmlparser2@5.0.1:
     resolution: {integrity: sha512-vKZZra6CSe9qsJzh0BjBGXo8dvzNsq/oGvsjfRdOrrryfeD9UOBEEQdeoqCRmKZchF5h2zOBMQ6YuQ0uRUmdbQ==}
 
@@ -24938,7 +24944,7 @@ snapshots:
     dependencies:
       domelementtype: 2.3.0
       domhandler: 5.0.3
-      entities: 4.4.0
+      entities: 4.5.0
 
   domain-browser@4.22.0: {}
 
@@ -24974,6 +24980,12 @@ snapshots:
       domelementtype: 2.3.0
       domhandler: 5.0.3
 
+  domutils@3.2.2:
+    dependencies:
+      dom-serializer: 2.0.0
+      domelementtype: 2.3.0
+      domhandler: 5.0.3
+
   dot-case@3.0.4:
     dependencies:
       no-case: 3.0.4
@@ -25110,10 +25122,10 @@ snapshots:
 
   entities@3.0.1: {}
 
-  entities@4.4.0: {}
-
   entities@4.5.0: {}
 
+  entities@6.0.1: {}
+
   env-paths@2.2.1: {}
 
   epub2@3.0.2(ts-toolbelt@9.6.0):
@@ -26626,6 +26638,13 @@ snapshots:
       htmlparser2: 8.0.2
       selderee: 0.11.0
 
+  htmlparser2@10.0.0:
+    dependencies:
+      domelementtype: 2.3.0
+      domhandler: 5.0.3
+      domutils: 3.2.2
+      entities: 6.0.1
+
   htmlparser2@5.0.1:
     dependencies:
       domelementtype: 2.3.0