Better prototype pollution fix

Author: jameswassink

dom-element.js

@@ -128,13 +128,10 @@ DOMElement.prototype.getAttributeNS =
 
 DOMElement.prototype.removeAttributeNS =
     function _Element_removeAttributeNS(namespace, name) {
-        var forbiddenKeys = ['__proto__', 'constructor', 'prototype'];
-        if (forbiddenKeys.includes(name)) {
-            return; // Ignore dangerous keys
-        }
+        // Safely access and delete the attribute
         var attributes = this._attributes[namespace];
-        if (attributes) {
-            delete attributes[name]
+        if (attributes && Object.prototype.hasOwnProperty.call(attributes, name)) {
+            delete attributes[name];
         }
     }