diff --git a/app/controllers/topics_controller.rb b/app/controllers/topics_controller.rb
index cd4c1224f09..f755f6eb2e5 100644
--- a/app/controllers/topics_controller.rb
+++ b/app/controllers/topics_controller.rb
@@ -51,7 +51,7 @@ class TopicsController < ApplicationController
   end
 
   def show
-    if params[:id].is_a?(Array)
+    if params[:id].is_a?(Array) || params[:id].is_a?(ActionController::Parameters)
       raise Discourse::InvalidParameters.new("Show only accepts a single ID")
     end
 
diff --git a/spec/requests/topics_controller_spec.rb b/spec/requests/topics_controller_spec.rb
index c36cff13727..d8b375ee67f 100644
--- a/spec/requests/topics_controller_spec.rb
+++ b/spec/requests/topics_controller_spec.rb
@@ -2344,6 +2344,12 @@ RSpec.describe TopicsController do
       expect(response.status).to eq(400)
     end
 
+    it "does not raise an unhandled exception when receiving a nested ID parameter" do
+      get "/t/#{topic.id}/summary?id[foo]=a"
+
+      expect(response.status).to eq(400)
+    end
+
     it "keeps the post_number parameter around when redirecting" do
       get "/t/#{topic.slug}", params: { post_number: 42 }
       expect(response).to redirect_to(topic.relative_url + "/42")