diff --git a/modules/criteoBidAdapter.js b/modules/criteoBidAdapter.js
index 45769edaf61..4fe9ca7d0f4 100644
--- a/modules/criteoBidAdapter.js
+++ b/modules/criteoBidAdapter.js
@@ -607,6 +607,7 @@ function buildCdbRequest(context, bidRequests, bidderRequest) {
   };
   request.user = bidderRequest.ortb2?.user || {};
   request.site = bidderRequest.ortb2?.site || {};
+  request.app = bidderRequest.ortb2?.app || {};
   if (bidderRequest && bidderRequest.ceh) {
     request.user.ceh = bidderRequest.ceh;
   }
diff --git a/test/spec/modules/criteoBidAdapter_spec.js b/test/spec/modules/criteoBidAdapter_spec.js
index 97b80ce95db..9987df34f2b 100755
--- a/test/spec/modules/criteoBidAdapter_spec.js
+++ b/test/spec/modules/criteoBidAdapter_spec.js
@@ -1122,6 +1122,30 @@ describe('The Criteo bidding adapter', function () {
       expect(request.data.user.uspIab).to.equal('1YNY');
     });
 
+    it('should properly build a request with site and app ortb fields', function () {
+      const bidRequests = [];
+      let app = {
+        publisher: {
+          id: 'appPublisherId'
+        }
+      };
+      let site = {
+        publisher: {
+          id: 'sitePublisherId'
+        }
+      };
+      const bidderRequest = {
+        ortb2: {
+          app: app,
+          site: site
+        }
+      };
+      const request = spec.buildRequests(bidRequests, bidderRequest);
+
+      expect(request.data.app).to.equal(app);
+      expect(request.data.site).to.equal(site);
+    });
+
     it('should properly build a request with device sua field', function () {
       const sua = {}
       const bidRequests = [