Use stricter regex for broadcast target path

app/models/broadcast_message.rb

@@ -105,7 +105,10 @@ class BroadcastMessage < ApplicationRecord
   def matches_current_path(current_path)
     return true if current_path.blank? || target_path.blank?
 
-    current_path.match(Regexp.escape(target_path).gsub('\\*', '.*'))
+    escaped = Regexp.escape(target_path).gsub('\\*', '.*')
+    regexp = Regexp.new "^#{escaped}$", Regexp::IGNORECASE
+
+    regexp.match(current_path)
   end
 
   def flush_redis_cache

changelogs/unreleased/nicolasdular-improve-target-path-regex.yml

+---
+title: Use stricter regex for broadcast target path
+merge_request: 30210
+author:
+type: changed

spec/models/broadcast_message_spec.rb

@@ -143,6 +143,24 @@ describe BroadcastMessage do
 
       expect(subject.call('/group/groupname/issues').length).to eq(0)
     end
+
+    it 'does not return message if target path has no wild card at the end' do
+      create(:broadcast_message, target_path: "*/issues", broadcast_type: broadcast_type)
+
+      expect(subject.call('/group/issues/test').length).to eq(0)
+    end
+
+    it 'does not return message if target path has wild card at the end' do
+      create(:broadcast_message, target_path: "/issues/*", broadcast_type: broadcast_type)
+
+      expect(subject.call('/group/issues/test').length).to eq(0)
+    end
+
+    it 'does return message if target path has wild card at the beginning and the end' do
+      create(:broadcast_message, target_path: "*/issues/*", broadcast_type: broadcast_type)
+
+      expect(subject.call('/group/issues/test').length).to eq(1)
+    end
   end
 
   describe '.current', :use_clean_rails_memory_store_caching do