1 files changed, 23 insertions, 0 deletions
diff --git a/app/services/import/github_service.rb b/app/services/import/github_service.rb
index a2923b1e4f9..948dba2d206 100644
--- a/app/services/import/github_service.rb
+++ b/app/services/import/github_service.rb
@@ -6,6 +6,10 @@ module Import
     attr_reader :params, :current_user
 
     def execute(access_params, provider)
+      if blocked_url?
+        return log_and_return_error("Invalid URL: #{url}", :bad_request)
+      end
+
       unless authorized?
         return error(_('This namespace has already been taken! Please choose another one.'), :unprocessable_entity)
       end
@@ -56,6 +60,25 @@ module Import
       can?(current_user, :create_projects, target_namespace)
     end
 
+    def url
+      @url ||= params[:github_hostname]
+    end
+
+    def allow_local_requests?
+      Gitlab::CurrentSettings.allow_local_requests_from_web_hooks_and_services?
+    end
+
+    def blocked_url?
+      Gitlab::UrlBlocker.blocked_url?(
+        url,
+        {
+          allow_localhost: allow_local_requests?,
+          allow_local_network: allow_local_requests?,
+          schemes: %w(http https)
+        }
+      )
+    end
+
     private
 
     def log_error(exception)