diff --git a/package-lock.json b/package-lock.json
index d61ff409..6fe225b2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "@aws-sdk/lib-storage": "3.515.0",
         "@aws-sdk/s3-request-presigner": "3.421.0",
         "@fastify/accepts": "^4.3.0",
-        "@fastify/multipart": "^7.6.0",
+        "@fastify/multipart": "^8.3.0",
         "@fastify/rate-limit": "^7.6.0",
         "@fastify/swagger": "^8.3.1",
         "@fastify/swagger-ui": "^1.7.0",
@@ -2428,14 +2428,11 @@
       }
     },
     "node_modules/@fastify/busboy": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-1.1.0.tgz",
-      "integrity": "sha512-Fv854f94v0CzIDllbY3i/0NJPNBRNLDawf3BTYVGCe9VrIIs3Wi7AFx24F9NzCxdf0wyx/x0Q9kEVnvDOPnlxA==",
-      "dependencies": {
-        "text-decoding": "^1.0.0"
-      },
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-2.1.1.tgz",
+      "integrity": "sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA==",
       "engines": {
-        "node": ">=10.17.0"
+        "node": ">=14"
       }
     },
     "node_modules/@fastify/deepmerge": {
@@ -2457,16 +2454,14 @@
       }
     },
     "node_modules/@fastify/multipart": {
-      "version": "7.6.0",
-      "resolved": "https://registry.npmjs.org/@fastify/multipart/-/multipart-7.6.0.tgz",
-      "integrity": "sha512-mQoz0SMxk1WAYLYvQypoj3GYhCbmhnFl2LdleTzKQ4HgPfhVcMT014uln2wgzRh2y+gL74b/+j0mMVgvOKpqpQ==",
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/@fastify/multipart/-/multipart-8.3.0.tgz",
+      "integrity": "sha512-A8h80TTyqUzaMVH0Cr9Qcm6RxSkVqmhK/MVBYHYeRRSUbUYv08WecjWKSlG2aSnD4aGI841pVxAjC+G1GafUeQ==",
       "dependencies": {
-        "@fastify/busboy": "^1.0.0",
+        "@fastify/busboy": "^2.1.0",
         "@fastify/deepmerge": "^1.0.0",
         "@fastify/error": "^3.0.0",
-        "end-of-stream": "^1.4.4",
         "fastify-plugin": "^4.0.0",
-        "hexoid": "^1.0.0",
         "secure-json-parse": "^2.4.0",
         "stream-wormhole": "^1.1.0"
       }
@@ -7728,14 +7723,6 @@
         "node": ">= 0.4"
       }
     },
-    "node_modules/hexoid": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/hexoid/-/hexoid-1.0.0.tgz",
-      "integrity": "sha512-QFLV0taWQOZtvIRIAdBChesmogZrtuXvVWsFHZTk2SU+anspqZ2vMnoLg7IE1+Uk16N19APic1BuF8bC8c2m5g==",
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/html-escaper": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/html-escaper/-/html-escaper-2.0.2.tgz",
@@ -10934,11 +10921,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/text-decoding": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/text-decoding/-/text-decoding-1.0.0.tgz",
-      "integrity": "sha512-/0TJD42KDnVwKmDK6jj3xP7E2MG7SHAOG4tyTgyUCRPdHwvkquYNLEQltmdMa3owq3TkddCVcTsoctJI8VQNKA=="
-    },
     "node_modules/text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
@@ -13443,12 +13425,9 @@
       }
     },
     "@fastify/busboy": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-1.1.0.tgz",
-      "integrity": "sha512-Fv854f94v0CzIDllbY3i/0NJPNBRNLDawf3BTYVGCe9VrIIs3Wi7AFx24F9NzCxdf0wyx/x0Q9kEVnvDOPnlxA==",
-      "requires": {
-        "text-decoding": "^1.0.0"
-      }
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-2.1.1.tgz",
+      "integrity": "sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA=="
     },
     "@fastify/deepmerge": {
       "version": "1.3.0",
@@ -13469,16 +13448,14 @@
       }
     },
     "@fastify/multipart": {
-      "version": "7.6.0",
-      "resolved": "https://registry.npmjs.org/@fastify/multipart/-/multipart-7.6.0.tgz",
-      "integrity": "sha512-mQoz0SMxk1WAYLYvQypoj3GYhCbmhnFl2LdleTzKQ4HgPfhVcMT014uln2wgzRh2y+gL74b/+j0mMVgvOKpqpQ==",
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/@fastify/multipart/-/multipart-8.3.0.tgz",
+      "integrity": "sha512-A8h80TTyqUzaMVH0Cr9Qcm6RxSkVqmhK/MVBYHYeRRSUbUYv08WecjWKSlG2aSnD4aGI841pVxAjC+G1GafUeQ==",
       "requires": {
-        "@fastify/busboy": "^1.0.0",
+        "@fastify/busboy": "^2.1.0",
         "@fastify/deepmerge": "^1.0.0",
         "@fastify/error": "^3.0.0",
-        "end-of-stream": "^1.4.4",
         "fastify-plugin": "^4.0.0",
-        "hexoid": "^1.0.0",
         "secure-json-parse": "^2.4.0",
         "stream-wormhole": "^1.1.0"
       }
@@ -17451,11 +17428,6 @@
         "function-bind": "^1.1.2"
       }
     },
-    "hexoid": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/hexoid/-/hexoid-1.0.0.tgz",
-      "integrity": "sha512-QFLV0taWQOZtvIRIAdBChesmogZrtuXvVWsFHZTk2SU+anspqZ2vMnoLg7IE1+Uk16N19APic1BuF8bC8c2m5g=="
-    },
     "html-escaper": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/html-escaper/-/html-escaper-2.0.2.tgz",
@@ -19862,11 +19834,6 @@
         "minimatch": "^3.0.4"
       }
     },
-    "text-decoding": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/text-decoding/-/text-decoding-1.0.0.tgz",
-      "integrity": "sha512-/0TJD42KDnVwKmDK6jj3xP7E2MG7SHAOG4tyTgyUCRPdHwvkquYNLEQltmdMa3owq3TkddCVcTsoctJI8VQNKA=="
-    },
     "text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
diff --git a/package.json b/package.json
index 76c32fb6..cadfb705 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "@aws-sdk/lib-storage": "3.515.0",
     "@aws-sdk/s3-request-presigner": "3.421.0",
     "@fastify/accepts": "^4.3.0",
-    "@fastify/multipart": "^7.6.0",
+    "@fastify/multipart": "^8.3.0",
     "@fastify/rate-limit": "^7.6.0",
     "@fastify/swagger": "^8.3.1",
     "@fastify/swagger-ui": "^1.7.0",
diff --git a/src/storage/uploader.ts b/src/storage/uploader.ts
index 2b07ef07..e17226b7 100644
--- a/src/storage/uploader.ts
+++ b/src/storage/uploader.ts
@@ -326,12 +326,9 @@ export class Uploader {
       const customMd = request.headers['x-metadata']
 
       if (typeof customMd === 'string') {
-        if (userMetadata && Buffer.byteLength(customMd, 'utf8') > MAX_CUSTOM_METADATA_SIZE) {
-          throw ERRORS.EntityTooLarge(undefined, 'metadata')
-        }
-
         try {
-          userMetadata = JSON.parse(customMd)
+          const json = Buffer.from(customMd, 'base64').toString('utf8')
+          userMetadata = JSON.parse(json)
         } catch (e) {
           // no-op
         }