diff --git a/app/Views/attributes/item.php b/app/Views/attributes/item.php
index b807dc10c..75dff9927 100644
--- a/app/Views/attributes/item.php
+++ b/app/Views/attributes/item.php
@@ -12,7 +12,7 @@
     <div class="col-xs-8">
         <?= form_dropdown([
             'name'     => 'definition_name',
-            'options'  => $definition_names,
+            'options'  => esc($definition_names),
             'selected' => -1,
             'class'    => 'form-control',
             'id'       => 'definition_name'
@@ -45,7 +45,7 @@
                         $selected_value = $definition_value['selected_value'];
                         echo form_dropdown([
                             'name'               => "attribute_links[$definition_id]",
-                            'options'            => $definition_value['values'],
+                            'options'            => esc($definition_value['values']),
                             'selected'           => $selected_value,
                             'class'              => 'form-control',
                             'data-definition-id' => $definition_id
diff --git a/tests/Controllers/ItemsControllerTest.php b/tests/Controllers/ItemsControllerTest.php
index b584a63ea..895f87868 100644
--- a/tests/Controllers/ItemsControllerTest.php
+++ b/tests/Controllers/ItemsControllerTest.php
@@ -189,6 +189,36 @@ class ItemsControllerTest extends CIUnitTestCase
         $this->assertTrue($result['success']);
     }
 
+    /**
+     * Regression test for GHSA-cm7j-957q-8pgg: an attribute definition whose
+     * `definition_name` contains HTML must be entity-escaped when rendered in the
+     * items attributes dropdown, not emitted as a live (executable) tag.
+     */
+    public function testGetAttributesEscapesMaliciousDefinitionName(): void
+    {
+        $employeeId = $this->createItemsEmployee();
+        $this->loginAsItemsEmployee($employeeId);
+
+        $payload = '<img src=x onerror=alert(1)>';
+
+        $definitionData = [
+            'definition_name' => $payload,
+            'definition_type' => TEXT,
+            'definition_flags' => 0,
+            'deleted'         => 0,
+        ];
+        $this->assertTrue($this->attribute->saveDefinition($definitionData));
+        $this->assertNotEmpty($definitionData['definition_id']);
+
+        $response = $this->get('/items/attributes/1');
+        $output = (string) $response->getBody();
+
+        // A live, unescaped tag in the dropdown label is the stored-XSS sink.
+        $this->assertStringNotContainsString($payload, $output);
+        // The payload must be present only in entity-escaped form.
+        $this->assertStringContainsString('&lt;img src=x onerror=alert(1)&gt;', $output);
+    }
+
     public function testGenerateCsvHeaderBasic(): void
     {
         $stockLocations = ['Warehouse'];