diff --git a/ee/elastic/docs/20251211130305_add_policy_auto_dismissed_field_to_vulnerability.yml b/ee/elastic/docs/20251211130305_add_policy_auto_dismissed_field_to_vulnerability.yml
new file mode 100644
index 0000000000000000000000000000000000000000..ac3fc1f39c860de8db982876bdbdaf690bd46aec
--- /dev/null
+++ b/ee/elastic/docs/20251211130305_add_policy_auto_dismissed_field_to_vulnerability.yml
@@ -0,0 +1,10 @@
+---
+name: AddPolicyAutoDismissedFieldToVulnerability
+version: '20251211130305'
+description: Adds policy_auto_dismissed field to the Vulnerability index.
+group: group::security policies
+milestone: '18.8'
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/216336
+obsolete: false
+marked_obsolete_by_url:
+marked_obsolete_in_milestone:
diff --git a/ee/elastic/migrate/20251211130305_add_policy_auto_dismissed_field_to_vulnerability.rb b/ee/elastic/migrate/20251211130305_add_policy_auto_dismissed_field_to_vulnerability.rb
new file mode 100644
index 0000000000000000000000000000000000000000..9d59e591d011175915c1815ef3f7397bceb97822
--- /dev/null
+++ b/ee/elastic/migrate/20251211130305_add_policy_auto_dismissed_field_to_vulnerability.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddPolicyAutoDismissedFieldToVulnerability < Elastic::Migration
+  include ::Search::Elastic::MigrationUpdateMappingsHelper
+
+  DOCUMENT_TYPE = Vulnerability
+
+  private
+
+  def new_mappings
+    {
+      policy_auto_dismissed: {
+        type: 'boolean'
+      }
+    }
+  end
+end
diff --git a/ee/lib/search/elastic/types/vulnerability.rb b/ee/lib/search/elastic/types/vulnerability.rb
index 6db841d26860786610b36ab32a91419ae028444e..c1249048bff84964852717a15bfb3ced203c3387 100644
--- a/ee/lib/search/elastic/types/vulnerability.rb
+++ b/ee/lib/search/elastic/types/vulnerability.rb
@@ -78,7 +78,8 @@ def base_mappings
               false_positive: { type: 'boolean' },
               schema_version: { type: 'short' },
               security_project_tracked_context_id: { type: 'long' },
-              undetected_since: { type: 'date' }
+              undetected_since: { type: 'date' },
+              policy_auto_dismissed: { type: 'boolean' }
             }
           end
 
diff --git a/ee/spec/elastic/migrate/20251211130305_add_policy_auto_dismissed_field_to_vulnerability_spec.rb b/ee/spec/elastic/migrate/20251211130305_add_policy_auto_dismissed_field_to_vulnerability_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..3d34d19d0f7fc7dd93e604f58ba8dd8ee8d25438
--- /dev/null
+++ b/ee/spec/elastic/migrate/20251211130305_add_policy_auto_dismissed_field_to_vulnerability_spec.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require File.expand_path('ee/elastic/migrate/20251211130305_add_policy_auto_dismissed_field_to_vulnerability.rb')
+
+RSpec.describe AddPolicyAutoDismissedFieldToVulnerability, :elastic, feature_category: :security_policy_management do
+  let(:version) { 20251211130305 }
+
+  include_examples 'migration adds mapping'
+end