diff --git a/cvat/apps/engine/views.py b/cvat/apps/engine/views.py
index 86fb3a9ea258..38a57880f02e 100644
--- a/cvat/apps/engine/views.py
+++ b/cvat/apps/engine/views.py
@@ -33,8 +33,10 @@
 from rest_framework import mixins, serializers, status, viewsets
 from rest_framework.decorators import action
 from rest_framework.exceptions import APIException, NotFound, ValidationError, PermissionDenied
+from rest_framework.parsers import MultiPartParser
 from rest_framework.permissions import SAFE_METHODS
 from rest_framework.response import Response
+from rest_framework.settings import api_settings
 from django_sendfile import sendfile
 
 import cvat.apps.dataset_manager as dm
@@ -50,6 +52,7 @@
     CloudProviderChoice, Location
 )
 from cvat.apps.engine.models import CloudStorage as CloudStorageModel
+from cvat.apps.engine.parsers import TusUploadParser
 from cvat.apps.engine.serializers import (
     AboutSerializer, AnnotationFileSerializer, BasicUserSerializer,
     DataMetaReadSerializer, DataMetaWriteSerializer, DataSerializer,
@@ -78,6 +81,8 @@
 from cvat.apps.engine.cache import MediaCache
 from cvat.apps.events.handlers import handle_annotations_patch
 
+_UPLOAD_PARSER_CLASSES = api_settings.DEFAULT_PARSER_CLASSES + [MultiPartParser]
+
 @extend_schema(tags=['server'])
 class ServerViewSet(viewsets.ViewSet):
     serializer_class = None
@@ -306,7 +311,7 @@ def perform_create(self, serializer, **kwargs):
             '405': OpenApiResponse(description='Format is not available'),
         })
     @action(detail=True, methods=['GET', 'POST', 'OPTIONS'], serializer_class=None,
-        url_path=r'dataset/?$')
+        url_path=r'dataset/?$', parser_classes=_UPLOAD_PARSER_CLASSES)
     def dataset(self, request, pk):
         self._object = self.get_object() # force call of check_object_permissions()
         rq_id = f"import:dataset-for-project.id{pk}-by-{request.user}"
@@ -367,7 +372,8 @@ def dataset(self, request, pk):
     @extend_schema(methods=['HEAD'],
         summary="Implements TUS file uploading protocol."
     )
-    @action(detail=True, methods=['HEAD', 'PATCH'], url_path='dataset/'+UploadMixin.file_id_regex)
+    @action(detail=True, methods=['HEAD', 'PATCH'], url_path='dataset/'+UploadMixin.file_id_regex,
+        parser_classes=[TusUploadParser])
     def append_dataset_chunk(self, request, pk, file_id):
         self._object = self.get_object()
         return self.append_tus_chunk(request, file_id)
@@ -499,7 +505,8 @@ def export_backup(self, request, pk=None):
             '202': OpenApiResponse(description='Importing a backup file has been started'),
         })
     @action(detail=False, methods=['OPTIONS', 'POST'], url_path=r'backup/?$',
-        serializer_class=ProjectFileSerializer(required=False))
+        serializer_class=ProjectFileSerializer(required=False),
+        parser_classes=_UPLOAD_PARSER_CLASSES)
     def import_backup(self, request, pk=None):
         return self.deserialize(request, backup.import_project)
 
@@ -514,7 +521,7 @@ def import_backup(self, request, pk=None):
         summary="Implements TUS file uploading protocol."
     )
     @action(detail=False, methods=['HEAD', 'PATCH'], url_path='backup/'+UploadMixin.file_id_regex,
-        serializer_class=None)
+        serializer_class=None, parser_classes=[TusUploadParser])
     def append_backup_chunk(self, request, file_id):
         return self.append_tus_chunk(request, file_id)
 
@@ -731,7 +738,9 @@ def get_queryset(self):
             '201': OpenApiResponse(description='The task has been imported'), # or better specify {id: task_id}
             '202': OpenApiResponse(description='Importing a backup file has been started'),
         })
-    @action(detail=False, methods=['OPTIONS', 'POST'], url_path=r'backup/?$', serializer_class=TaskFileSerializer(required=False))
+    @action(detail=False, methods=['OPTIONS', 'POST'], url_path=r'backup/?$',
+        serializer_class=TaskFileSerializer(required=False),
+        parser_classes=_UPLOAD_PARSER_CLASSES)
     def import_backup(self, request, pk=None):
         return self.deserialize(request, backup.import_task)
 
@@ -745,7 +754,8 @@ def import_backup(self, request, pk=None):
     @extend_schema(methods=['HEAD'],
         summary="Implements TUS file uploading protocol."
     )
-    @action(detail=False, methods=['HEAD', 'PATCH'], url_path='backup/'+UploadMixin.file_id_regex)
+    @action(detail=False, methods=['HEAD', 'PATCH'], url_path='backup/'+UploadMixin.file_id_regex,
+        parser_classes=[TusUploadParser])
     def append_backup_chunk(self, request, file_id):
         return self.append_tus_chunk(request, file_id)
 
@@ -909,7 +919,8 @@ def upload_finished(self, request):
         responses={
             '200': OpenApiResponse(description='Data of a specific type'),
         })
-    @action(detail=True, methods=['OPTIONS', 'POST', 'GET'], url_path=r'data/?$')
+    @action(detail=True, methods=['OPTIONS', 'POST', 'GET'], url_path=r'data/?$',
+        parser_classes=_UPLOAD_PARSER_CLASSES)
     def data(self, request, pk):
         self._object = self.get_object() # call check_object_permissions as well
         if request.method == 'POST' or request.method == 'OPTIONS':
@@ -945,7 +956,8 @@ def data(self, request, pk):
     @extend_schema(methods=['HEAD'],
         summary="Implements TUS file uploading protocol."
     )
-    @action(detail=True, methods=['HEAD', 'PATCH'], url_path='data/'+UploadMixin.file_id_regex)
+    @action(detail=True, methods=['HEAD', 'PATCH'], url_path='data/'+UploadMixin.file_id_regex,
+        parser_classes=[TusUploadParser])
     def append_data_chunk(self, request, pk, file_id):
         self._object = self.get_object()
         return self.append_tus_chunk(request, file_id)
@@ -1032,7 +1044,7 @@ def append_data_chunk(self, request, pk, file_id):
             '204': OpenApiResponse(description='The annotation has been deleted'),
         })
     @action(detail=True, methods=['GET', 'DELETE', 'PUT', 'PATCH', 'POST', 'OPTIONS'], url_path=r'annotations/?$',
-        serializer_class=None)
+        serializer_class=None, parser_classes=_UPLOAD_PARSER_CLASSES)
     def annotations(self, request, pk):
         self._object = self.get_object() # force call of check_object_permissions()
         if request.method == 'GET':
@@ -1106,7 +1118,8 @@ def annotations(self, request, pk):
         operation_id='tasks_annotations_file_retrieve_status',
         summary="Implements TUS file uploading protocol."
     )
-    @action(detail=True, methods=['HEAD', 'PATCH'], url_path='annotations/'+UploadMixin.file_id_regex)
+    @action(detail=True, methods=['HEAD', 'PATCH'], url_path='annotations/'+UploadMixin.file_id_regex,
+        parser_classes=[TusUploadParser])
     def append_annotations_chunk(self, request, pk, file_id):
         self._object = self.get_object()
         return self.append_tus_chunk(request, file_id)
@@ -1428,7 +1441,7 @@ def upload_finished(self, request):
             '204': OpenApiResponse(description='The annotation has been deleted'),
         })
     @action(detail=True, methods=['GET', 'DELETE', 'PUT', 'PATCH', 'POST', 'OPTIONS'], url_path=r'annotations/?$',
-        serializer_class=LabeledDataSerializer)
+        serializer_class=LabeledDataSerializer, parser_classes=_UPLOAD_PARSER_CLASSES)
     def annotations(self, request, pk):
         self._object = self.get_object() # force call of check_object_permissions()
         if request.method == 'GET':
@@ -1506,7 +1519,8 @@ def annotations(self, request, pk):
     @extend_schema(methods=['HEAD'],
         summary="Implements TUS file uploading protocol."
     )
-    @action(detail=True, methods=['HEAD', 'PATCH'], url_path='annotations/'+UploadMixin.file_id_regex)
+    @action(detail=True, methods=['HEAD', 'PATCH'], url_path='annotations/'+UploadMixin.file_id_regex,
+        parser_classes=[TusUploadParser])
     def append_annotations_chunk(self, request, pk, file_id):
         self._object = self.get_object()
         return self.append_tus_chunk(request, file_id)
@@ -2077,6 +2091,10 @@ class CloudStorageViewSet(viewsets.GenericViewSet, mixins.ListModelMixin,
     lookup_fields = {'owner': 'owner__username', 'name': 'display_name'}
     iam_organization_field = 'organization'
 
+    # Multipart support is necessary here, as CloudStorageWriteSerializer
+    # contains a file field (key_file).
+    parser_classes = _UPLOAD_PARSER_CLASSES
+
     def get_serializer_class(self):
         if self.request.method in ('POST', 'PATCH'):
             return CloudStorageWriteSerializer
diff --git a/cvat/schema.yml b/cvat/schema.yml
index d14e91c227ff..6325ebbf0681 100644
--- a/cvat/schema.yml
+++ b/cvat/schema.yml
@@ -47,15 +47,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/LoginSerializerExRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/LoginSerializerExRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/LoginSerializerExRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/LoginSerializerExRequest'
         required: true
       security:
       - sessionAuth: []
@@ -140,15 +131,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PasswordChangeRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PasswordChangeRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PasswordChangeRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PasswordChangeRequest'
         required: true
       security:
       - sessionAuth: []
@@ -193,15 +175,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PasswordResetSerializerExRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PasswordResetSerializerExRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PasswordResetSerializerExRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PasswordResetSerializerExRequest'
         required: true
       security:
       - sessionAuth: []
@@ -249,15 +222,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PasswordResetConfirmRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PasswordResetConfirmRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PasswordResetConfirmRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PasswordResetConfirmRequest'
         required: true
       security:
       - sessionAuth: []
@@ -298,15 +262,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/RegisterSerializerExRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/RegisterSerializerExRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/RegisterSerializerExRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/RegisterSerializerExRequest'
         required: true
       security:
       - sessionAuth: []
@@ -375,15 +330,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/SigningRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/SigningRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/SigningRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/SigningRequest'
         required: true
       security:
       - sessionAuth: []
@@ -572,15 +518,9 @@ paths:
                   manifests:
                   - manifest.jsonl
                 summary: Create GCS
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/CloudStorageWriteRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/CloudStorageWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/CloudStorageWriteRequest'
         required: true
       security:
       - sessionAuth: []
@@ -710,15 +650,9 @@ paths:
                   manifests:
                   - manifest.jsonl
                 summary: Create GCS
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedCloudStorageWriteRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/PatchedCloudStorageWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedCloudStorageWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -1047,15 +981,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/CommentWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/CommentWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/CommentWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/CommentWriteRequest'
         required: true
       security:
       - sessionAuth: []
@@ -1141,15 +1066,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedCommentWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedCommentWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedCommentWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedCommentWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -1311,15 +1227,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/ClientEventsRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/ClientEventsRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/ClientEventsRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/ClientEventsRequest'
         required: true
       security:
       - sessionAuth: []
@@ -1429,15 +1336,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/InvitationWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/InvitationWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/InvitationWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/InvitationWriteRequest'
         required: true
       security:
       - sessionAuth: []
@@ -1523,15 +1421,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedInvitationWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedInvitationWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedInvitationWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedInvitationWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -1702,15 +1591,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/IssueWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/IssueWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/IssueWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/IssueWriteRequest'
         required: true
       security:
       - sessionAuth: []
@@ -1796,15 +1676,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedIssueWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedIssueWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedIssueWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedIssueWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -2045,15 +1916,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedJobWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedJobWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedJobWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedJobWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -2217,15 +2079,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/AnnotationFileRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/AnnotationFileRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/AnnotationFileRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/AnnotationFileRequest'
         required: true
       security:
       - sessionAuth: []
@@ -2279,15 +2135,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/JobAnnotationsUpdateRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/JobAnnotationsUpdateRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/JobAnnotationsUpdateRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/JobAnnotationsUpdateRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -2341,15 +2191,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedLabeledDataRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedLabeledDataRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/PatchedLabeledDataRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedLabeledDataRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -2430,18 +2274,6 @@ paths:
       - jobs
       requestBody:
         content:
-          application/json:
-            schema:
-              type: string
-              format: binary
-          application/x-www-form-urlencoded:
-            schema:
-              type: string
-              format: binary
-          multipart/form-data:
-            schema:
-              type: string
-              format: binary
           application/offset+octet-stream:
             schema:
               type: string
@@ -2589,15 +2421,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedDataMetaWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedDataMetaWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedDataMetaWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedDataMetaWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -2924,15 +2747,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedLabelRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedLabelRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedLabelRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedLabelRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -3091,15 +2905,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/OnlineFunctionCallRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/OnlineFunctionCallRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/OnlineFunctionCallRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/OnlineFunctionCallRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -3356,15 +3161,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedMembershipWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedMembershipWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedMembershipWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedMembershipWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -3519,15 +3315,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/OrganizationWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/OrganizationWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/OrganizationWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/OrganizationWriteRequest'
         required: true
       security:
       - sessionAuth: []
@@ -3613,15 +3400,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedOrganizationWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedOrganizationWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedOrganizationWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedOrganizationWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -3786,15 +3564,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/ProjectWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/ProjectWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/ProjectWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/ProjectWriteRequest'
         required: true
       security:
       - sessionAuth: []
@@ -3880,15 +3649,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedProjectWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedProjectWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedProjectWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedProjectWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -4250,15 +4010,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/DatasetWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/DatasetWriteRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/DatasetWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/DatasetWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -4307,18 +4061,6 @@ paths:
       - projects
       requestBody:
         content:
-          application/json:
-            schema:
-              type: string
-              format: binary
-          application/x-www-form-urlencoded:
-            schema:
-              type: string
-              format: binary
-          multipart/form-data:
-            schema:
-              type: string
-              format: binary
           application/offset+octet-stream:
             schema:
               type: string
@@ -4413,15 +4155,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/BackupWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/BackupWriteRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/BackupWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/BackupWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -4462,18 +4198,6 @@ paths:
       - projects
       requestBody:
         content:
-          application/json:
-            schema:
-              type: string
-              format: binary
-          application/x-www-form-urlencoded:
-            schema:
-              type: string
-              format: binary
-          multipart/form-data:
-            schema:
-              type: string
-              format: binary
           application/offset+octet-stream:
             schema:
               type: string
@@ -4941,15 +4665,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/TaskWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/TaskWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/TaskWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/TaskWriteRequest'
         required: true
       security:
       - sessionAuth: []
@@ -5035,15 +4750,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedTaskWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedTaskWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedTaskWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedTaskWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -5245,15 +4951,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/TaskAnnotationsWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/TaskAnnotationsWriteRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/TaskAnnotationsWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/TaskAnnotationsWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -5306,15 +5006,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/TaskAnnotationsUpdateRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/TaskAnnotationsUpdateRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/TaskAnnotationsUpdateRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/TaskAnnotationsUpdateRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -5368,15 +5062,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedLabeledDataRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedLabeledDataRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/PatchedLabeledDataRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedLabeledDataRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -5461,18 +5149,6 @@ paths:
       - tasks
       requestBody:
         content:
-          application/json:
-            schema:
-              type: string
-              format: binary
-          application/x-www-form-urlencoded:
-            schema:
-              type: string
-              format: binary
-          multipart/form-data:
-            schema:
-              type: string
-              format: binary
           application/offset+octet-stream:
             schema:
               type: string
@@ -5663,15 +5339,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/DataRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/DataRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/DataRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/DataRequest'
         required: true
       security:
       - sessionAuth: []
@@ -5717,18 +5387,6 @@ paths:
       - tasks
       requestBody:
         content:
-          application/json:
-            schema:
-              type: string
-              format: binary
-          application/x-www-form-urlencoded:
-            schema:
-              type: string
-              format: binary
-          multipart/form-data:
-            schema:
-              type: string
-              format: binary
           application/offset+octet-stream:
             schema:
               type: string
@@ -5813,15 +5471,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedDataMetaWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedDataMetaWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedDataMetaWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedDataMetaWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -6049,15 +5698,9 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/TaskFileRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/TaskFileRequest'
           multipart/form-data:
             schema:
               $ref: '#/components/schemas/TaskFileRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/TaskFileRequest'
         required: true
       security:
       - sessionAuth: []
@@ -6099,18 +5742,6 @@ paths:
       - tasks
       requestBody:
         content:
-          application/json:
-            schema:
-              type: string
-              format: binary
-          application/x-www-form-urlencoded:
-            schema:
-              type: string
-              format: binary
-          multipart/form-data:
-            schema:
-              type: string
-              format: binary
           application/offset+octet-stream:
             schema:
               type: string
@@ -6280,15 +5911,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedUserRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedUserRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedUserRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedUserRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
@@ -6488,15 +6110,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/WebhookWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/WebhookWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/WebhookWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/WebhookWriteRequest'
         required: true
       security:
       - sessionAuth: []
@@ -6582,15 +6195,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/WebhookWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/WebhookWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/WebhookWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/WebhookWriteRequest'
         required: true
       security:
       - sessionAuth: []
@@ -6636,15 +6240,6 @@ paths:
           application/json:
             schema:
               $ref: '#/components/schemas/PatchedWebhookWriteRequest'
-          application/x-www-form-urlencoded:
-            schema:
-              $ref: '#/components/schemas/PatchedWebhookWriteRequest'
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/PatchedWebhookWriteRequest'
-          application/offset+octet-stream:
-            schema:
-              $ref: '#/components/schemas/PatchedWebhookWriteRequest'
       security:
       - sessionAuth: []
         csrfAuth: []
diff --git a/cvat/settings/base.py b/cvat/settings/base.py
index 4d1d56113051..4aae54079a46 100644
--- a/cvat/settings/base.py
+++ b/cvat/settings/base.py
@@ -147,9 +147,6 @@ def add_ssh_keys():
 REST_FRAMEWORK = {
     'DEFAULT_PARSER_CLASSES': [
         'rest_framework.parsers.JSONParser',
-        'rest_framework.parsers.FormParser',
-        'rest_framework.parsers.MultiPartParser',
-        'cvat.apps.engine.parsers.TusUploadParser',
     ],
     'DEFAULT_RENDERER_CLASSES': [
         'cvat.apps.engine.renderers.CVATAPIRenderer',