diff --git a/package.json b/package.json
index 44d0f40782..9de818ead2 100644
--- a/package.json
+++ b/package.json
@@ -83,6 +83,7 @@
     "@formio/core": "1.3.0-rc.16",
     "@formio/text-mask-addons": "^3.8.0-formio.2",
     "@formio/vanilla-text-mask": "^5.1.1-formio.1",
+    "abortcontroller-polyfill": "^1.7.5",
     "autocompleter": "^8.0.4",
     "bootstrap": "^5.3.0",
     "browser-cookies": "^1.2.0",
diff --git a/src/providers/storage/s3.js b/src/providers/storage/s3.js
index 2ae8acd0cc..210ddb8b58 100644
--- a/src/providers/storage/s3.js
+++ b/src/providers/storage/s3.js
@@ -1,5 +1,7 @@
 import XHR from './xhr';
 import { withRetries } from './util';
+
+const AbortController = window.AbortController || require('abortcontroller-polyfill/dist/cjs-ponyfill');
 function s3(formio) {
   return {
     async uploadFile(file, fileName, dir, progressCallback, url, options, fileKey, groupPermissions, groupId, abortCallback, multipartOptions) {
@@ -80,10 +82,12 @@ function s3(formio) {
     async completeMultipartUpload(serverResponse, parts, multipart) {
       const { changeMessage } = multipart;
       changeMessage('Completing AWS S3 multipart upload...');
+      const token = formio.getToken();
       const response = await fetch(`${formio.formUrl}/storage/s3/multipart/complete`, {
         method: 'POST',
         headers: {
-          'Content-Type': 'application/json'
+          'Content-Type': 'application/json',
+          ...(token ? { 'x-jwt-token': token } : {})
         },
         body: JSON.stringify({ parts, uploadId: serverResponse.uploadId, key: serverResponse.key })
       });
@@ -99,13 +103,15 @@ function s3(formio) {
     },
     abortMultipartUpload(serverResponse) {
       const { uploadId, key } = serverResponse;
+      const token = formio.getToken();
       fetch(`${formio.formUrl}/storage/s3/multipart/abort`, {
         method: 'POST',
         headers: {
-          'Content-Type': 'application/json'
+          'Content-Type': 'application/json',
+          ...(token ? { 'x-jwt-token': token } : {})
         },
         body: JSON.stringify({ uploadId, key })
-      });
+      }).catch((err) => console.error('Error while aborting multipart upload:', err));
     },
     uploadParts(file, urls, headers, partSize, multipart, abortSignal) {
       const { changeMessage, progressCallback } = multipart;
diff --git a/yarn.lock b/yarn.lock
index d3822a5834..5597f5e203 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -792,6 +792,11 @@ abbrev@^1.0.0:
   resolved "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
   integrity sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
 
+abortcontroller-polyfill@^1.7.5:
+  version "1.7.5"
+  resolved "https://registry.yarnpkg.com/abortcontroller-polyfill/-/abortcontroller-polyfill-1.7.5.tgz#6738495f4e901fbb57b6c0611d0c75f76c485bed"
+  integrity sha512-JMJ5soJWP18htbbxJjG7bG6yuI6pRhgJ0scHHTfkUjf6wjP912xZWvM+A4sJK3gqd9E8fcPbDnOefbA9Th/FIQ==
+
 accepts@~1.3.4:
   version "1.3.8"
   resolved "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz#0bf0be125b67014adcb0b0921e62db7bffe16b2e"