Merge pull request #6889 from coollabsio/andrasbacsai/fix-host-header-injection

feat: implement TrustHosts middleware to handle FQDN and IP address trust logic

app/Models/InstanceSettings.php

@@ -35,13 +35,18 @@ class InstanceSettings extends Model
     protected static function booted(): void
     {
         static::updated(function ($settings) {
-            if ($settings->isDirty('helper_version')) {
+            if ($settings->wasChanged('helper_version')) {
                 Server::chunkById(100, function ($servers) {
                     foreach ($servers as $server) {
                         PullHelperImageJob::dispatch($server);
                     }
                 });
             }
+
+            // Clear trusted hosts cache when FQDN changes
+            if ($settings->wasChanged('fqdn')) {
+                \Cache::forget('instance_settings_fqdn_host');
+            }
         });
     }