diff --git a/lib/ronin/db/url.rb b/lib/ronin/db/url.rb
index 62c428f8..1c41e1db 100644
--- a/lib/ronin/db/url.rb
+++ b/lib/ronin/db/url.rb
@@ -116,6 +116,14 @@ class URL < ActiveRecord::Base
       #   @return [Array<Credentials>]
       has_many :credentials, through: :web_credentials
 
+      # @!attribute [rw] vulnerabilities
+      #   The vulnerabilities which reference the URL.
+      #
+      #   @return [Array<Vulnerability>]
+      #
+      #   @since 0.2.0
+      has_many :vulnerabilities, dependent: :destroy
+
       #
       # Searches for all URLs using HTTP.
       #
@@ -492,3 +500,4 @@ def self.normalized_path(uri)
 require 'ronin/db/url_query_param_name'
 require 'ronin/db/url_query_param'
 require 'ronin/db/web_credential'
+require 'ronin/db/vulnerability'