diff --git a/app/controllers/general.php b/app/controllers/general.php
index 0447b305e8..c9efc90426 100644
--- a/app/controllers/general.php
+++ b/app/controllers/general.php
@@ -125,7 +125,7 @@ function router(App $utopia, Database $dbForPlatform, callable $getProjectDB, Sw
     $type = $rule->getAttribute('resourceType');
 
     if ($type === 'function' || $type === 'site' || $type === 'deployment') {
-        $resourceCollection = match($type) {
+        $resourceCollection = match ($type) {
             'function' => 'functions',
             'site' => 'sites',
             'deployment' => 'deployments',
@@ -200,7 +200,7 @@ function router(App $utopia, Database $dbForPlatform, callable $getProjectDB, Sw
             throw new AppwriteException(AppwriteException::GENERAL_RESOURCE_BLOCKED);
         }
 
-        $version = match($type) {
+        $version = match ($type) {
             'function' => $resource->getAttribute('version', 'v2'),
             'site' => 'v4',
             'deployment' => 'v4'
@@ -209,7 +209,7 @@ function router(App $utopia, Database $dbForPlatform, callable $getProjectDB, Sw
         $runtimes = Config::getParam($version === 'v2' ? 'runtimes-v2' : 'runtimes', []);
         $spec = Config::getParam('runtime-specifications')[$resource->getAttribute('specification', APP_COMPUTE_SPECIFICATION_DEFAULT)];
 
-        $runtime = match($type) {
+        $runtime = match ($type) {
             'function' => $runtimes[$resource->getAttribute('runtime')] ?? null,
             'site' => $runtimes[$resource->getAttribute('buildRuntime')] ?? null,
             'deployment' => $runtimes[$resource->getAttribute('buildRuntime')] ?? null,
@@ -224,7 +224,7 @@ function router(App $utopia, Database $dbForPlatform, callable $getProjectDB, Sw
             throw new AppwriteException(AppwriteException::FUNCTION_RUNTIME_UNSUPPORTED, 'Runtime "' . $resource->getAttribute('runtime', '') . '" is not supported');
         }
 
-        $deploymentId = match($type) {
+        $deploymentId = match ($type) {
             'function' => $resource->getAttribute('deployment', ''),
             'site' => $resource->getAttribute('deploymentId', ''),
             'deployment' => $subResource->getId()
@@ -390,12 +390,12 @@ function router(App $utopia, Database $dbForPlatform, callable $getProjectDB, Sw
         /** Execute function */
         $executor = new Executor(System::getEnv('_APP_EXECUTOR_HOST'));
         try {
-            $version = match($type) {
+            $version = match ($type) {
                 'function' => $resource->getAttribute('version', 'v2'),
                 'site' => 'v4',
                 'deployment' => 'v4'
             };
-            $entrypoint = match($type) {
+            $entrypoint = match ($type) {
                 'function' => $deployment->getAttribute('entrypoint', ''),
                 'site' => '',
                 'deployment' => ''
@@ -422,7 +422,7 @@ function router(App $utopia, Database $dbForPlatform, callable $getProjectDB, Sw
                 $runtimeEntrypoint = 'cp /tmp/code.tar.gz /mnt/code/code.tar.gz && nohup helpers/start.sh "' . $startCommand . '"';
             }
 
-            $entrypoint = match($type) {
+            $entrypoint = match ($type) {
                 'function' => $deployment->getAttribute('entrypoint', ''),
                 'site' => '',
                 'deployment' => ''
@@ -490,8 +490,8 @@ function router(App $utopia, Database $dbForPlatform, callable $getProjectDB, Sw
 
             if ($type === 'function') {
                 $execution
-                ->setAttribute('status', 'failed')
-                ->setAttribute('errors', $th->getMessage() . '\nError Code: ' . $th->getCode());
+                    ->setAttribute('status', 'failed')
+                    ->setAttribute('errors', $th->getMessage() . '\nError Code: ' . $th->getCode());
             }
             Console::error($th->getMessage());
 
@@ -558,8 +558,7 @@ function router(App $utopia, Database $dbForPlatform, callable $getProjectDB, Sw
             ->addMetric(METRIC_EXECUTIONS_MB_SECONDS, (int)(($spec['memory'] ?? APP_COMPUTE_MEMORY_DEFAULT) * $execution->getAttribute('duration', 0) * ($spec['cpus'] ?? APP_COMPUTE_CPUS_DEFAULT)))
             ->addMetric(str_replace('{functionInternalId}', $resource->getInternalId(), METRIC_FUNCTION_ID_EXECUTIONS_MB_SECONDS), (int)(($spec['memory'] ?? APP_COMPUTE_MEMORY_DEFAULT) * $execution->getAttribute('duration', 0) * ($spec['cpus'] ?? APP_COMPUTE_CPUS_DEFAULT)))
             ->setProject($project)
-            ->trigger()
-        ;
+            ->trigger();
 
         return true;
     } elseif ($type === 'api') {
@@ -738,6 +737,12 @@ App::init()
         $validator = new Hostname($clients);
         if ($validator->isValid($origin)) {
             $refDomainOrigin = $origin;
+        } else {
+            // Auto-allow domains with linked rule
+            $rule = Authorization::skip(fn () => $dbForPlatform->getDocument('rules', md5($origin)));
+            if (!$rule->isEmpty() && $rule->getAttribute('projectInternalId') === $project->getInternalId()) {
+                $refDomainOrigin = $origin;
+            }
         }
 
         $refDomain = (!empty($protocol) ? $protocol : $request->getProtocol()) . '://' . $refDomainOrigin . (!empty($port) ? ':' . $port : '');
@@ -787,7 +792,7 @@ App::init()
                 $response->addFilter(new ResponseV18());
             }
             if (version_compare($responseFormat, APP_VERSION_STABLE, '>')) {
-                $response->addHeader('X-Appwrite-Warning', "The current SDK is built for Appwrite " . $responseFormat . ". However, the current Appwrite server version is ". APP_VERSION_STABLE . ". Please downgrade your SDK to match the Appwrite version: https://appwrite.io/docs/sdks");
+                $response->addHeader('X-Appwrite-Warning', "The current SDK is built for Appwrite " . $responseFormat . ". However, the current Appwrite server version is " . APP_VERSION_STABLE . ". Please downgrade your SDK to match the Appwrite version: https://appwrite.io/docs/sdks");
             }
         }
 
diff --git a/tests/e2e/Services/Sites/SitesCustomServerTest.php b/tests/e2e/Services/Sites/SitesCustomServerTest.php
index ecba7a8b16..2a0b11f16c 100644
--- a/tests/e2e/Services/Sites/SitesCustomServerTest.php
+++ b/tests/e2e/Services/Sites/SitesCustomServerTest.php
@@ -1405,5 +1405,61 @@ class SitesCustomServerTest extends Scope
         $this->cleanupSite($siteId);
     }
 
+    public function testSiteCors(): void
+    {
+        // Create rule together with site
+        $subdomain = 'startup' . \uniqid();
+
+        $siteId = $this->setupSite([
+            'siteId' => ID::unique(),
+            'name' => 'Startup site',
+            'framework' => 'other',
+            'adapter' => 'static',
+            'buildRuntime' => 'static-1',
+            'outputDirectory' => './',
+            'buildCommand' => '',
+            'installCommand' => '',
+            'fallbackFile' => '',
+            'subdomain' => $subdomain
+        ]);
+
+        $this->assertNotEmpty($siteId);
+
+        $domain = $this->getSiteDomain($siteId);
+
+        $this->assertNotEmpty($domain);
+
+        $url = 'http://' . $domain;
+
+        $response = $this->client->call(Client::METHOD_GET, '/account', array_merge([
+            'content-type' => 'application/json',
+            'x-appwrite-project' => $this->getProject()['$id'],
+            'referer' => $url,
+            'origin' => $url
+        ]));
+
+        $this->assertEquals($url, $response['headers']['access-control-allow-origin']);
+
+        $response = $this->client->call(Client::METHOD_GET, '/account', array_merge([
+            'content-type' => 'application/json',
+            'x-appwrite-project' => 'unknown',
+            'referer' => $url,
+            'origin' => $url
+        ]));
+
+        $this->assertNotEquals($url, $response['headers']['access-control-allow-origin']);
+        $this->assertEquals('http://localhost', $response['headers']['access-control-allow-origin']);
+
+        $response = $this->client->call(Client::METHOD_GET, '/account', array_merge([
+            'content-type' => 'application/json',
+            'x-appwrite-project' => $this->getProject()['$id'],
+            'referer' => 'http://unknown.com',
+            'origin' => 'http://unknown.com'
+        ]));
+
+        $this->assertNotEquals($url, $response['headers']['access-control-allow-origin']);
+        $this->assertEquals('http://localhost', $response['headers']['access-control-allow-origin']);
+    }
+
     // TODO: Add tests for deletion of resources when site is deleted
 }