diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index bddfd2d27..000000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,225 +0,0 @@
-version: 2.1
-
-orbs:
-  ruby: circleci/ruby@1.4.1
-  node: circleci/node@5.0.1
-
-executors:
-  default:
-    parameters:
-      ruby-version:
-        type: string
-    docker:
-      - image: cimg/ruby:<< parameters.ruby-version >>
-        environment:
-          BUNDLE_JOBS: 3
-          BUNDLE_RETRY: 3
-          CONTINUOUS_INTEGRATION: true
-          DB_HOST: localhost
-          DB_USER: root
-          DISABLE_SIMPLECOV: true
-          RAILS_ENV: test
-      - image: cimg/postgres:14.0
-        environment:
-          POSTGRES_USER: root
-          POSTGRES_HOST_AUTH_METHOD: trust
-      - image: cimg/redis:6.2
-
-commands:
-  install-system-dependencies:
-    steps:
-      - run:
-          name: Install system dependencies
-          command: |
-            sudo apt-get update
-            sudo apt-get install -y libicu-dev libidn11-dev
-  install-ruby-dependencies:
-    parameters:
-      ruby-version:
-        type: string
-    steps:
-      - run:
-          command: |
-            bundle config clean 'true'
-            bundle config frozen 'true'
-            bundle config without 'development production'
-          name: Set bundler settings
-      - ruby/install-deps:
-          bundler-version: '2.3.8'
-          key: ruby<< parameters.ruby-version >>-gems-v1
-  wait-db:
-    steps:
-      - run:
-          command: dockerize -wait tcp://localhost:5432 -wait tcp://localhost:6379 -timeout 1m
-          name: Wait for PostgreSQL and Redis
-
-jobs:
-  build:
-    docker:
-      - image: cimg/ruby:3.0-node
-        environment:
-          RAILS_ENV: test
-    steps:
-      - checkout
-      - install-system-dependencies
-      - install-ruby-dependencies:
-          ruby-version: '3.0'
-      - node/install-packages:
-          cache-version: v1
-          pkg-manager: yarn
-      - run:
-          command: |
-            export NODE_OPTIONS=--openssl-legacy-provider
-            ./bin/rails assets:precompile
-          name: Precompile assets
-      - persist_to_workspace:
-          paths:
-            - public/assets
-            - public/packs-test
-          root: .
-
-  test:
-    parameters:
-      ruby-version:
-        type: string
-    executor:
-      name: default
-      ruby-version: << parameters.ruby-version >>
-    environment:
-      ALLOW_NOPAM: true
-      PAM_ENABLED: true
-      PAM_DEFAULT_SERVICE: pam_test
-      PAM_CONTROLLED_SERVICE: pam_test_controlled
-    parallelism: 4
-    steps:
-      - checkout
-      - install-system-dependencies
-      - run:
-          command: sudo apt-get install -y ffmpeg imagemagick libpam-dev
-          name: Install additional system dependencies
-      - run:
-          command: bundle config with 'pam_authentication'
-          name: Enable PAM authentication
-      - install-ruby-dependencies:
-          ruby-version: << parameters.ruby-version >>
-      - attach_workspace:
-          at: .
-      - wait-db
-      - run:
-          command: ./bin/rails db:create db:schema:load db:seed
-          name: Load database schema
-      - ruby/rspec-test
-
-  test-migrations:
-    executor:
-      name: default
-      ruby-version: '3.0'
-    steps:
-      - checkout
-      - install-system-dependencies
-      - install-ruby-dependencies:
-          ruby-version: '3.0'
-      - wait-db
-      - run:
-          command: ./bin/rails db:create
-          name: Create database
-      - run:
-          command: ./bin/rails db:migrate VERSION=20171010025614
-          name: Run migrations up to v2.0.0
-      - run:
-          command: ./bin/rails tests:migrations:populate_v2
-          name: Populate database with test data
-      - run:
-          command: ./bin/rails db:migrate VERSION=20180514140000
-          name: Run migrations up to v2.4.0
-      - run:
-          command: ./bin/rails tests:migrations:populate_v2_4
-          name: Populate database with test data
-      - run:
-          command: ./bin/rails db:migrate VERSION=20180707154237
-          name: Run migrations up to v2.4.3
-      - run:
-          command: ./bin/rails tests:migrations:populate_v2_4_3
-          name: Populate database with test data
-      - run:
-          command: ./bin/rails db:migrate
-          name: Run all remaining migrations
-      - run:
-          command: ./bin/rails tests:migrations:check_database
-          name: Check migration result
-
-  test-two-step-migrations:
-    executor:
-      name: default
-      ruby-version: '3.0'
-    steps:
-      - checkout
-      - install-system-dependencies
-      - install-ruby-dependencies:
-          ruby-version: '3.0'
-      - wait-db
-      - run:
-          command: ./bin/rails db:create
-          name: Create database
-      - run:
-          command: ./bin/rails db:migrate VERSION=20171010025614
-          name: Run migrations up to v2.0.0
-      - run:
-          command: ./bin/rails tests:migrations:populate_v2
-          name: Populate database with test data
-      - run:
-          command: ./bin/rails db:migrate VERSION=20180514140000
-          name: Run pre-deployment migrations up to v2.4.0
-          environment:
-            SKIP_POST_DEPLOYMENT_MIGRATIONS: true
-      - run:
-          command: ./bin/rails tests:migrations:populate_v2_4
-          name: Populate database with test data
-      - run:
-          command: ./bin/rails db:migrate VERSION=20180707154237
-          name: Run migrations up to v2.4.3
-          environment:
-            SKIP_POST_DEPLOYMENT_MIGRATIONS: true
-      - run:
-          command: ./bin/rails tests:migrations:populate_v2_4_3
-          name: Populate database with test data
-      - run:
-          command: ./bin/rails db:migrate
-          name: Run all remaining pre-deployment migrations
-          environment:
-            SKIP_POST_DEPLOYMENT_MIGRATIONS: true
-      - run:
-          command: ./bin/rails db:migrate
-          name: Run all post-deployment migrations
-      - run:
-          command: ./bin/rails tests:migrations:check_database
-          name: Check migration result
-
-workflows:
-  version: 2
-  build-and-test:
-    jobs:
-      - build
-      - test:
-          matrix:
-            parameters:
-              ruby-version:
-                - '2.7'
-                - '3.0'
-          name: test-ruby<< matrix.ruby-version >>
-          requires:
-            - build
-      - test-migrations:
-          requires:
-            - build
-      - test-two-step-migrations:
-          requires:
-            - build
-      - node/run:
-          cache-version: v1
-          name: test-webui
-          pkg-manager: yarn
-          requires:
-            - build
-          version: lts
-          yarn-run: test:jest
diff --git a/.github/workflows/build-container-image.yml b/.github/workflows/build-container-image.yml
index 599879460..b9aebcc46 100644
--- a/.github/workflows/build-container-image.yml
+++ b/.github/workflows/build-container-image.yml
@@ -4,6 +4,9 @@ on:
       platforms:
         required: true
         type: string
+      cache:
+        type: boolean
+        default: true
       use_native_arm64_builder:
         type: boolean
       push_to_images:
@@ -85,5 +88,5 @@ jobs:
           push: ${{ inputs.push_to_images != '' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+          cache-from: ${{ inputs.cache && 'type=gha' || '' }}
+          cache-to: ${{ inputs.cache && 'type=gha,mode=max' || '' }}
diff --git a/.github/workflows/build-releases.yml b/.github/workflows/build-releases.yml
index 72a12f4df..c19766b18 100644
--- a/.github/workflows/build-releases.yml
+++ b/.github/workflows/build-releases.yml
@@ -17,6 +17,8 @@ jobs:
       push_to_images: |
         tootsuite/mastodon
         ghcr.io/mastodon/mastodon
+      # Do not use cache when building releases, so apt update is always ran and the release always contain the latest packages
+      cache: false
       flavor: |
         latest=false
       tags: |
diff --git a/.github/workflows/test-image-build.yml b/.github/workflows/test-image-build.yml
new file mode 100644
index 000000000..71344c004
--- /dev/null
+++ b/.github/workflows/test-image-build.yml
@@ -0,0 +1,15 @@
+name: Test container image build
+on:
+  pull_request:
+permissions:
+  contents: read
+
+jobs:
+  build-image:
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
+
+    uses: ./.github/workflows/build-container-image.yml
+    with:
+      platforms: linux/amd64 # Testing only on native platform so it is performant
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 583704e50..d251f9879 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,21 @@ All notable changes to this project will be documented in this file.
 **The 4.0.x branch will not receive any update after 2023-10-31.**
 This means that no security fix will be made available for this branch after this date, and you will need to update to a more recent version (such as the 4.1.x branch) to receive security fixes.
 
+## [4.0.10] - 2023-09-19
+
+### Fixed
+
+- Fix moderator rights inconsistencies ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26729))
+- Fix crash when encountering invalid URL ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26814))
+- Fix cached posts including stale stats ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/26409))
+- Fix uploading of video files for which `ffprobe` reports `0/0` average framerate ([NicolaiSoeborg](https://github.com/mastodon/mastodon/pull/26500))
+- Fix unexpected audio stream transcoding when uploaded video is eligible to passthrough ([yufushiro](https://github.com/mastodon/mastodon/pull/26608))
+
+### Security
+
+- Fix missing HTML sanitization in translation API (CVE-2023-42452)
+- Fix incorrect domain name normalization (CVE-2023-42451)
+
 ## [4.0.9] - 2023-09-05
 
 ### Changed
diff --git a/Dockerfile b/Dockerfile
index 172e1cd2c..577cd0845 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,6 +19,7 @@ RUN ARCH= && \
   esac && \
     echo "Etc/UTC" > /etc/localtime && \
 	apt-get update && \
+	apt-get -yq dist-upgrade && \
 	apt-get install -y --no-install-recommends ca-certificates wget python3 apt-utils && \
 	cd ~ && \
 	wget -q https://nodejs.org/download/release/v$NODE_VER/node-v$NODE_VER-linux-$ARCH.tar.gz && \
diff --git a/app/models/account_statuses_filter.rb b/app/lib/account_statuses_filter.rb
similarity index 100%
rename from app/models/account_statuses_filter.rb
rename to app/lib/account_statuses_filter.rb
diff --git a/app/lib/admin/account_statuses_filter.rb b/app/lib/admin/account_statuses_filter.rb
new file mode 100644
index 000000000..94927e4b6
--- /dev/null
+++ b/app/lib/admin/account_statuses_filter.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class Admin::AccountStatusesFilter < AccountStatusesFilter
+  private
+
+  def blocked?
+    false
+  end
+end
diff --git a/app/lib/tag_manager.rb b/app/lib/tag_manager.rb
index a1d12a654..2e929d6e3 100644
--- a/app/lib/tag_manager.rb
+++ b/app/lib/tag_manager.rb
@@ -7,18 +7,18 @@ class TagManager
   include RoutingHelper
 
   def web_domain?(domain)
-    domain.nil? || domain.gsub(/[\/]/, '').casecmp(Rails.configuration.x.web_domain).zero?
+    domain.nil? || domain.delete_suffix('/').casecmp(Rails.configuration.x.web_domain).zero?
   end
 
   def local_domain?(domain)
-    domain.nil? || domain.gsub(/[\/]/, '').casecmp(Rails.configuration.x.local_domain).zero?
+    domain.nil? || domain.delete_suffix('/').casecmp(Rails.configuration.x.local_domain).zero?
   end
 
   def normalize_domain(domain)
     return if domain.nil?
 
     uri = Addressable::URI.new
-    uri.host = domain.gsub(/[\/]/, '')
+    uri.host = domain.delete_suffix('/')
     uri.normalized_host
   end
 
@@ -28,7 +28,7 @@ class TagManager
     domain = uri.host + (uri.port ? ":#{uri.port}" : '')
 
     TagManager.instance.web_domain?(domain)
-  rescue Addressable::URI::InvalidURIError
+  rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError
     false
   end
 end
diff --git a/app/lib/video_metadata_extractor.rb b/app/lib/video_metadata_extractor.rb
index 2896620cb..f27d34868 100644
--- a/app/lib/video_metadata_extractor.rb
+++ b/app/lib/video_metadata_extractor.rb
@@ -43,6 +43,9 @@ class VideoMetadataExtractor
         @height      = video_stream[:height]
         @frame_rate  = video_stream[:avg_frame_rate] == '0/0' ? nil : Rational(video_stream[:avg_frame_rate])
         @r_frame_rate = video_stream[:r_frame_rate] == '0/0' ? nil : Rational(video_stream[:r_frame_rate])
+        # For some video streams the frame_rate reported by `ffprobe` will be 0/0, but for these streams we
+        # should use `r_frame_rate` instead. Video screencast generated by Gnome Screencast have this issue.
+        @frame_rate ||= @r_frame_rate
       end
 
       if (audio_stream = audio_streams.first)
diff --git a/app/models/admin/status_batch_action.rb b/app/models/admin/status_batch_action.rb
index 0f019b854..0711d479c 100644
--- a/app/models/admin/status_batch_action.rb
+++ b/app/models/admin/status_batch_action.rb
@@ -137,6 +137,6 @@ class Admin::StatusBatchAction
   end
 
   def allowed_status_ids
-    AccountStatusesFilter.new(@report.target_account, current_account).results.with_discarded.where(id: status_ids).pluck(:id)
+    Admin::AccountStatusesFilter.new(@report.target_account, current_account).results.with_discarded.where(id: status_ids).pluck(:id)
   end
 end
diff --git a/app/models/status.rb b/app/models/status.rb
index 8bdb5e8db..091859b83 100644
--- a/app/models/status.rb
+++ b/app/models/status.rb
@@ -353,13 +353,25 @@ class Status < ApplicationRecord
 
       account_ids.uniq!
 
+      status_ids = cached_items.map { |item| item.reblog? ? item.reblog_of_id : item.id }.uniq
+
       return if account_ids.empty?
 
       accounts = Account.where(id: account_ids).includes(:account_stat, :user).index_by(&:id)
 
+      status_stats = StatusStat.where(status_id: status_ids).index_by(&:status_id)
+
       cached_items.each do |item|
         item.account = accounts[item.account_id]
         item.reblog.account = accounts[item.reblog.account_id] if item.reblog?
+
+        if item.reblog?
+          status_stat = status_stats[item.reblog.id]
+          item.reblog.status_stat = status_stat if status_stat.present?
+        else
+          status_stat = status_stats[item.id]
+          item.status_stat = status_stat if status_stat.present?
+        end
       end
     end
 
diff --git a/app/policies/admin/status_policy.rb b/app/policies/admin/status_policy.rb
index ffaa30f13..e9379c25e 100644
--- a/app/policies/admin/status_policy.rb
+++ b/app/policies/admin/status_policy.rb
@@ -12,7 +12,7 @@ class Admin::StatusPolicy < ApplicationPolicy
   end
 
   def show?
-    role.can?(:manage_reports, :manage_users) && (record.public_visibility? || record.unlisted_visibility? || record.reported?)
+    role.can?(:manage_reports, :manage_users) && (record.public_visibility? || record.unlisted_visibility? || record.reported? || viewable_through_normal_policy?)
   end
 
   def destroy?
@@ -26,4 +26,10 @@ class Admin::StatusPolicy < ApplicationPolicy
   def review?
     role.can?(:manage_taxonomies)
   end
+
+  private
+
+  def viewable_through_normal_policy?
+    StatusPolicy.new(current_account, record, @preloaded_relations).show?
+  end
 end
diff --git a/app/services/translate_status_service.rb b/app/services/translate_status_service.rb
index 539a0d9db..b905f8158 100644
--- a/app/services/translate_status_service.rb
+++ b/app/services/translate_status_service.rb
@@ -12,7 +12,9 @@ class TranslateStatusService < BaseService
     @content = status_content_format(@status)
     @target_language = target_language
 
-    Rails.cache.fetch("translations/#{@status.language}/#{@target_language}/#{content_hash}", expires_in: CACHE_TTL) { translation_backend.translate(@content, @status.language, @target_language) }
+    Rails.cache.fetch("translations/#{@status.language}/#{@target_language}/#{content_hash}", expires_in: CACHE_TTL) do
+      Sanitize.fragment(translation_backend.translate(@content, @status.language, @target_language), Sanitize::Config::MASTODON_STRICT)
+    end
   end
 
   private
diff --git a/docker-compose.yml b/docker-compose.yml
index 2efd47d97..c59d0b525 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -56,7 +56,7 @@ services:
 
   web:
     build: .
-    image: ghcr.io/mastodon/mastodon:v4.0.9
+    image: ghcr.io/mastodon/mastodon:v4.0.10
     restart: always
     env_file: .env.production
     command: bash -c "rm -f /mastodon/tmp/pids/server.pid; bundle exec rails s -p 3000"
@@ -77,7 +77,7 @@ services:
 
   streaming:
     build: .
-    image: ghcr.io/mastodon/mastodon:v4.0.9
+    image: ghcr.io/mastodon/mastodon:v4.0.10
     restart: always
     env_file: .env.production
     command: node ./streaming
@@ -95,7 +95,7 @@ services:
 
   sidekiq:
     build: .
-    image: ghcr.io/mastodon/mastodon:v4.0.9
+    image: ghcr.io/mastodon/mastodon:v4.0.10
     restart: always
     env_file: .env.production
     command: bundle exec sidekiq
diff --git a/lib/mastodon/version.rb b/lib/mastodon/version.rb
index 610d95bb9..1465e4372 100644
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@@ -13,7 +13,7 @@ module Mastodon
     end
 
     def patch
-      9
+      10
     end
 
     def flags
diff --git a/lib/paperclip/transcoder.rb b/lib/paperclip/transcoder.rb
index be40b4924..0f2e30f7d 100644
--- a/lib/paperclip/transcoder.rb
+++ b/lib/paperclip/transcoder.rb
@@ -37,12 +37,14 @@ module Paperclip
         @output_options['f']       = 'image2'
         @output_options['vframes'] = 1
       when 'mp4'
-        @output_options['acodec'] = 'aac'
-        @output_options['strict'] = 'experimental'
+        unless eligible_to_passthrough?(metadata)
+          @output_options['acodec'] = 'aac'
+          @output_options['strict'] = 'experimental'
 
-        if high_vfr?(metadata) && !eligible_to_passthrough?(metadata)
-          @output_options['vsync'] = 'vfr'
-          @output_options['r'] = @vfr_threshold
+          if high_vfr?(metadata)
+            @output_options['vsync'] = 'vfr'
+            @output_options['r'] = @vfr_threshold
+          end
         end
       end
 
diff --git a/spec/controllers/admin/statuses_controller_spec.rb b/spec/controllers/admin/statuses_controller_spec.rb
index 227688e23..877c7e63e 100644
--- a/spec/controllers/admin/statuses_controller_spec.rb
+++ b/spec/controllers/admin/statuses_controller_spec.rb
@@ -40,24 +40,36 @@ describe Admin::StatusesController do
   end
 
   describe 'POST #batch' do
-    before do
-      post :batch, params: { :account_id => account.id, action => '', :admin_status_batch_action => { status_ids: status_ids } }
-    end
+    subject { post :batch, params: { :account_id => account.id, action => '', :admin_status_batch_action => { status_ids: status_ids } } }
 
     let(:status_ids) { [media_attached_status.id] }
 
-    context 'when action is report' do
+    shared_examples 'when action is report' do
       let(:action) { 'report' }
 
       it 'creates a report' do
+        subject
+
         report = Report.last
         expect(report.target_account_id).to eq account.id
         expect(report.status_ids).to eq status_ids
       end
 
       it 'redirects to report page' do
+        subject
+
         expect(response).to redirect_to(admin_report_path(Report.last.id))
       end
     end
+
+    it_behaves_like 'when action is report'
+
+    context 'when the moderator is blocked by the author' do
+      before do
+        account.block!(user.account)
+      end
+
+      it_behaves_like 'when action is report'
+    end
   end
 end
diff --git a/spec/controllers/concerns/cache_concern_spec.rb b/spec/controllers/concerns/cache_concern_spec.rb
index a34d7d726..21daa1992 100644
--- a/spec/controllers/concerns/cache_concern_spec.rb
+++ b/spec/controllers/concerns/cache_concern_spec.rb
@@ -13,12 +13,17 @@ RSpec.describe CacheConcern, type: :controller do
     def empty_relation
       render plain: cache_collection(Status.none, Status).size
     end
+
+    def account_statuses_favourites
+      render plain: cache_collection(Status.where(account_id: params[:id]), Status).map(&:favourites_count)
+    end
   end
 
   before do
     routes.draw do
-      get  'empty_array' => 'anonymous#empty_array'
-      post 'empty_relation' => 'anonymous#empty_relation'
+      get 'empty_array' => 'anonymous#empty_array'
+      get 'empty_relation' => 'anonymous#empty_relation'
+      get 'account_statuses_favourites' => 'anonymous#account_statuses_favourites'
     end
   end
 
@@ -36,5 +41,20 @@ RSpec.describe CacheConcern, type: :controller do
         expect(response.body).to eq '0'
       end
     end
+
+    context 'when given a collection of statuses' do
+      let!(:account) { Fabricate(:account) }
+      let!(:status)  { Fabricate(:status, account: account) }
+
+      it 'correctly updates with new interactions' do
+        get :account_statuses_favourites, params: { id: account.id }
+        expect(response.body).to eq '[0]'
+
+        FavouriteService.new.call(account, status)
+
+        get :account_statuses_favourites, params: { id: account.id }
+        expect(response.body).to eq '[1]'
+      end
+    end
   end
 end