diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f5f837d9c..84f3126d78 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,22 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
 
+## 13.4.7 (2020-12-07)
+
+### Security (10 changes)
+
+- Validate zoom links to start with https only. !1055
+- Require at least 3 characters when searching for project in the Explore page.
+- Do not show emails of users in confirmation page.
+- Forbid setting a gitlabUserList strategy to a list from another project.
+- Fix mermaid resource consumption in GFM fields.
+- Ensure group and project memberships are not leaked via API for users with private profiles.
+- GraphQL User: do not expose email if set to private.
+- Filter search parameter to prevent data leaks.
+- Do not expose starred projects of users with private profile via API.
+- Do not show starred & contributed projects of users with private profile.
+
+
 ## 13.4.6 (2020-11-03)
 
 ### Fixed (1 change)
diff --git a/GITALY_SERVER_VERSION b/GITALY_SERVER_VERSION
index 56f3fd065d..b64e52773f 100644
--- a/GITALY_SERVER_VERSION
+++ b/GITALY_SERVER_VERSION
@@ -1 +1 @@
-13.4.6
\ No newline at end of file
+13.4.7
\ No newline at end of file
diff --git a/VERSION b/VERSION
index 56f3fd065d..b64e52773f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-13.4.6
\ No newline at end of file
+13.4.7
\ No newline at end of file
diff --git a/app/assets/javascripts/behaviors/markdown/render_mermaid.js b/app/assets/javascripts/behaviors/markdown/render_mermaid.js
index cb0e634505..37a965de86 100644
--- a/app/assets/javascripts/behaviors/markdown/render_mermaid.js
+++ b/app/assets/javascripts/behaviors/markdown/render_mermaid.js
@@ -18,7 +18,13 @@ import { __, sprintf } from '~/locale';
 //
 
 // This is an arbitrary number; Can be iterated upon when suitable.
-const MAX_CHAR_LIMIT = 5000;
+const MAX_CHAR_LIMIT = 2000;
+// Max # of mermaid blocks that can be rendered in a page.
+const MAX_MERMAID_BLOCK_LIMIT = 50;
+// Keep a map of mermaid blocks we've already rendered.
+const elsProcessingMap = new WeakMap();
+let renderedMermaidBlocks = 0;
+
 let mermaidModule = {};
 
 function importMermaidModule() {
@@ -110,13 +116,22 @@ function renderMermaids($els) {
       let renderedChars = 0;
 
       $els.each((i, el) => {
+        // Skipping all the elements which we've already queued in requestIdleCallback
+        if (elsProcessingMap.has(el)) {
+          return;
+        }
+
         const { source } = fixElementSource(el);
         /**
-         * Restrict the rendering to a certain amount of character to
-         * prevent mermaidjs from hanging up the entire thread and
-         * causing a DoS.
+         * Restrict the rendering to a certain amount of character
+         * and mermaid blocks to prevent mermaidjs from hanging
+         * up the entire thread and causing a DoS.
          */
-        if ((source && source.length > MAX_CHAR_LIMIT) || renderedChars > MAX_CHAR_LIMIT) {
+        if (
+          (source && source.length > MAX_CHAR_LIMIT) ||
+          renderedChars > MAX_CHAR_LIMIT ||
+          renderedMermaidBlocks >= MAX_MERMAID_BLOCK_LIMIT
+        ) {
           const html = `
           <div class="alert gl-alert gl-alert-warning alert-dismissible lazy-render-mermaid-container js-lazy-render-mermaid-container fade show" role="alert">
             <div>
@@ -146,8 +161,13 @@ function renderMermaids($els) {
         }
 
         renderedChars += source.length;
+        renderedMermaidBlocks += 1;
 
-        renderMermaidEl(el);
+        const requestId = window.requestIdleCallback(() => {
+          renderMermaidEl(el);
+        });
+
+        elsProcessingMap.set(el, requestId);
       });
     })
     .catch(err => {
diff --git a/app/controllers/explore/projects_controller.rb b/app/controllers/explore/projects_controller.rb
index b3fa089a71..1f6f8e4429 100644
--- a/app/controllers/explore/projects_controller.rb
+++ b/app/controllers/explore/projects_controller.rb
@@ -8,6 +8,8 @@ class Explore::ProjectsController < Explore::ApplicationController
   include SortingHelper
   include SortingPreference
 
+  MIN_SEARCH_LENGTH = 3
+
   before_action :set_non_archived_param
   before_action :set_sorting
 
@@ -70,7 +72,7 @@ class Explore::ProjectsController < Explore::ApplicationController
   def load_projects
     load_project_counts
 
-    projects = ProjectsFinder.new(current_user: current_user, params: params).execute
+    projects = ProjectsFinder.new(current_user: current_user, params: params.merge(minimum_search_length: MIN_SEARCH_LENGTH)).execute
 
     projects = preload_associations(projects)
     projects = projects.page(params[:page]).without_count
diff --git a/app/controllers/search_controller.rb b/app/controllers/search_controller.rb
index dedaf0c903..d041b2f4b7 100644
--- a/app/controllers/search_controller.rb
+++ b/app/controllers/search_controller.rb
@@ -126,7 +126,6 @@ class SearchController < ApplicationController
     payload[:metadata] ||= {}
     payload[:metadata]['meta.search.group_id'] = params[:group_id]
     payload[:metadata]['meta.search.project_id'] = params[:project_id]
-    payload[:metadata]['meta.search.search'] = params[:search]
     payload[:metadata]['meta.search.scope'] = params[:scope]
   end
 
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 75a861423e..f4757316e1 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -19,7 +19,7 @@ class UsersController < ApplicationController
   prepend_before_action(only: [:show]) { authenticate_sessionless_user!(:rss) }
   before_action :user, except: [:exists, :suggests]
   before_action :authorize_read_user_profile!,
-                only: [:calendar, :calendar_activities, :groups, :projects, :contributed_projects, :starred_projects, :snippets]
+                only: [:calendar, :calendar_activities, :groups, :projects, :contributed, :starred, :snippets]
 
   def show
     respond_to do |format|
diff --git a/app/finders/projects_finder.rb b/app/finders/projects_finder.rb
index 471029c1ef..c3a7301aff 100644
--- a/app/finders/projects_finder.rb
+++ b/app/finders/projects_finder.rb
@@ -18,6 +18,7 @@
 #     personal: boolean
 #     search: string
 #     search_namespaces: boolean
+#     minimum_search_length: int
 #     non_archived: boolean
 #     archived: 'only' or boolean
 #     min_access_level: integer
@@ -177,6 +178,9 @@ class ProjectsFinder < UnionFinder
 
   def by_search(items)
     params[:search] ||= params[:name]
+
+    return items.none if params[:search].present? && params[:minimum_search_length].present? && params[:search].length < params[:minimum_search_length].to_i
+
     items.optionally_search(params[:search], include_namespace: params[:search_namespaces].present?)
   end
 
diff --git a/app/finders/starred_projects_finder.rb b/app/finders/starred_projects_finder.rb
index fcb469d1d1..e209960c47 100644
--- a/app/finders/starred_projects_finder.rb
+++ b/app/finders/starred_projects_finder.rb
@@ -1,11 +1,22 @@
 # frozen_string_literal: true
 
 class StarredProjectsFinder < ProjectsFinder
+  include Gitlab::Allowable
+
   def initialize(user, params: {}, current_user: nil)
+    @user = user
+
     super(
       params: params,
       current_user: current_user,
       project_ids_relation: user.starred_projects.select(:id)
     )
   end
+
+  def execute
+    # Do not show starred projects if the user has a private profile.
+    return Project.none unless can?(current_user, :read_user_profile, @user)
+
+    super
+  end
 end
diff --git a/app/graphql/types/user_type.rb b/app/graphql/types/user_type.rb
index 8047708776..4fa62c4961 100644
--- a/app/graphql/types/user_type.rb
+++ b/app/graphql/types/user_type.rb
@@ -19,7 +19,7 @@ module Types
     field :state, Types::UserStateEnum, null: false,
           description: 'State of the user'
     field :email, GraphQL::STRING_TYPE, null: true,
-          description: 'User email'
+          description: 'User email', method: :public_email
     field :avatar_url, GraphQL::STRING_TYPE, null: true,
           description: "URL of the user's avatar"
     field :web_url, GraphQL::STRING_TYPE, null: false,
@@ -30,13 +30,11 @@ module Types
           resolver: Resolvers::TodoResolver,
           description: 'Todos of the user'
     field :group_memberships, Types::GroupMemberType.connection_type, null: true,
-          description: 'Group memberships of the user',
-          method: :group_members
+          description: 'Group memberships of the user'
     field :status, Types::UserStatusType, null: true,
            description: 'User status'
     field :project_memberships, Types::ProjectMemberType.connection_type, null: true,
-          description: 'Project memberships of the user',
-          method: :project_members
+          description: 'Project memberships of the user'
     field :starred_projects, Types::ProjectType.connection_type, null: true,
           description: 'Projects starred by the user',
           resolver: Resolvers::UserStarredProjectsResolver
diff --git a/app/models/operations/feature_flags/user_list.rb b/app/models/operations/feature_flags/user_list.rb
index b9bdcb59d5..75a457567a 100644
--- a/app/models/operations/feature_flags/user_list.rb
+++ b/app/models/operations/feature_flags/user_list.rb
@@ -23,6 +23,11 @@ module Operations
 
       before_destroy :ensure_no_associated_strategies
 
+      def self.belongs_to?(project_id, user_list_ids)
+        uniq_ids = user_list_ids.uniq
+        where(id: uniq_ids, project_id: project_id).count == uniq_ids.count
+      end
+
       private
 
       def ensure_no_associated_strategies
diff --git a/app/presenters/user_presenter.rb b/app/presenters/user_presenter.rb
index f201b36346..0028e6d9ef 100644
--- a/app/presenters/user_presenter.rb
+++ b/app/presenters/user_presenter.rb
@@ -2,4 +2,18 @@
 
 class UserPresenter < Gitlab::View::Presenter::Delegated
   presents :user
+
+  def group_memberships
+    should_be_private? ? GroupMember.none : user.group_members
+  end
+
+  def project_memberships
+    should_be_private? ? ProjectMember.none : user.project_members
+  end
+
+  private
+
+  def should_be_private?
+    !can?(current_user, :read_user_profile, user)
+  end
 end
diff --git a/app/services/todos/destroy/entity_leave_service.rb b/app/services/todos/destroy/entity_leave_service.rb
index 0c0548a17a..a7424c610c 100644
--- a/app/services/todos/destroy/entity_leave_service.rb
+++ b/app/services/todos/destroy/entity_leave_service.rb
@@ -24,7 +24,7 @@ module Todos
         # if at least reporter, all entities including confidential issues can be accessed
         return if user_has_reporter_access?
 
-        remove_confidential_issue_todos
+        remove_confidential_resource_todos
 
         if entity.private?
           remove_project_todos
@@ -43,7 +43,7 @@ module Todos
       end
 
       # rubocop: disable CodeReuse/ActiveRecord
-      def remove_confidential_issue_todos
+      def remove_confidential_resource_todos
         Todo.where(
           target_id: confidential_issues.select(:id), target_type: Issue.name, user_id: user.id
         ).delete_all
@@ -147,3 +147,5 @@ module Todos
     end
   end
 end
+
+Todos::Destroy::EntityLeaveService.prepend_if_ee('EE::Todos::Destroy::EntityLeaveService')
diff --git a/app/validators/zoom_url_validator.rb b/app/validators/zoom_url_validator.rb
index dc4ca6b950..e0f8e4e34a 100644
--- a/app/validators/zoom_url_validator.rb
+++ b/app/validators/zoom_url_validator.rb
@@ -5,8 +5,13 @@
 # Custom validator for zoom urls
 #
 class ZoomUrlValidator < ActiveModel::EachValidator
+  ALLOWED_SCHEMES = %w(https).freeze
+
   def validate_each(record, attribute, value)
-    return if Gitlab::ZoomLinkExtractor.new(value).links.size == 1
+    links_count = Gitlab::ZoomLinkExtractor.new(value).links.size
+    valid = Gitlab::UrlSanitizer.valid?(value, allowed_schemes: ALLOWED_SCHEMES)
+
+    return if links_count == 1 && valid
 
     record.errors.add(:url, 'must contain one valid Zoom URL')
   end
diff --git a/app/views/devise/confirmations/new.html.haml b/app/views/devise/confirmations/new.html.haml
index f8aa3cf98d..8c0d076c77 100644
--- a/app/views/devise/confirmations/new.html.haml
+++ b/app/views/devise/confirmations/new.html.haml
@@ -6,7 +6,7 @@
         = render "devise/shared/error_messages", resource: resource
       .form-group
         = f.label :email
-        = f.email_field :email, class: "form-control", required: true, title: 'Please provide a valid email address.'
+        = f.email_field :email, class: "form-control", required: true, title: 'Please provide a valid email address.', value: nil
       .clearfix
         = f.submit "Resend", class: 'btn btn-success'
 
diff --git a/app/views/explore/projects/_projects.html.haml b/app/views/explore/projects/_projects.html.haml
index d819c4ea55..9b87314411 100644
--- a/app/views/explore/projects/_projects.html.haml
+++ b/app/views/explore/projects/_projects.html.haml
@@ -1,2 +1,6 @@
-- is_explore_page = defined?(explore_page) && explore_page
-= render 'shared/projects/list', projects: projects, user: current_user, explore_page: is_explore_page, pipeline_status: Feature.enabled?(:dashboard_pipeline_status, default_enabled: true)
+- if params[:name].present? && params[:name].size < Explore::ProjectsController::MIN_SEARCH_LENGTH
+  .nothing-here-block
+    %h5= _('Enter at least three characters to search')
+- else
+  - is_explore_page = defined?(explore_page) && explore_page
+  = render 'shared/projects/list', projects: projects, user: current_user, explore_page: is_explore_page, pipeline_status: Feature.enabled?(:dashboard_pipeline_status, default_enabled: true)
diff --git a/config/application.rb b/config/application.rb
index 4d2f3745b5..436bb288c3 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -135,6 +135,7 @@ module Gitlab
       hook
       import_url
       elasticsearch_url
+      search
       otp_attempt
       sentry_dsn
       trace
diff --git a/config/feature_categories.yml b/config/feature_categories.yml
index 7b85f910d8..5c6c11f01e 100644
--- a/config/feature_categories.yml
+++ b/config/feature_categories.yml
@@ -46,6 +46,7 @@
 - dynamic_application_security_testing
 - editor_extension
 - epics
+- epic_tracking
 - error_tracking
 - feature_flags
 - foundations
diff --git a/db/post_migrate/20201109114603_schedule_remove_inaccessible_epic_todos.rb b/db/post_migrate/20201109114603_schedule_remove_inaccessible_epic_todos.rb
new file mode 100644
index 0000000000..13d12675a2
--- /dev/null
+++ b/db/post_migrate/20201109114603_schedule_remove_inaccessible_epic_todos.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+class ScheduleRemoveInaccessibleEpicTodos < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INTERVAL = 2.minutes
+  BATCH_SIZE = 10
+  MIGRATION = 'RemoveInaccessibleEpicTodos'
+
+  disable_ddl_transaction!
+
+  class Epic < ActiveRecord::Base
+    include EachBatch
+  end
+
+  def up
+    return unless Gitlab.ee?
+
+    relation = Epic.where(confidential: true)
+
+    queue_background_migration_jobs_by_range_at_intervals(
+      relation, MIGRATION, INTERVAL, batch_size: BATCH_SIZE)
+  end
+
+  def down
+    # no-op
+  end
+end
diff --git a/db/schema_migrations/20201109114603 b/db/schema_migrations/20201109114603
new file mode 100644
index 0000000000..c1df2223db
--- /dev/null
+++ b/db/schema_migrations/20201109114603
@@ -0,0 +1 @@
+ae8034ec52df47ce2ce3397715dd18347e4d297a963c17c7b26321f414dfa632
\ No newline at end of file
diff --git a/doc/administration/geo/disaster_recovery/index.md b/doc/administration/geo/disaster_recovery/index.md
index 8862776ee1..2b373f85af 100644
--- a/doc/administration/geo/disaster_recovery/index.md
+++ b/doc/administration/geo/disaster_recovery/index.md
@@ -129,7 +129,11 @@ Note the following when promoting a secondary:
    ```
 
 1. Promote the **secondary** node to the **primary** node.
-   
+   CAUTION: **Caution:**
+   If the secondary node [has been paused](../../geo/index.md#pausing-and-resuming-replication), this performs
+   a point-in-time recovery to the last known state.
+   Data that was created on the primary while the secondary was paused will be lost.
+
    To promote the secondary node to primary along with preflight checks:
 
    ```shell
@@ -159,11 +163,16 @@ conjunction with multiple servers, as it can only
 perform changes on a **secondary** with only a single machine. Instead, you must
 do this manually.
 
+CAUTION: **Caution:**
+If the secondary node [has been paused](../../geo/index.md#pausing-and-resuming-replication), this performs
+a point-in-time recovery to the last known state.
+Data that was created on the primary while the secondary was paused will be lost.
+
 1. SSH in to the database node in the **secondary** and trigger PostgreSQL to
    promote to read-write:
 
    ```shell
-   sudo gitlab-pg-ctl promote
+   sudo gitlab-ctl promote-db
    ```
 
    In GitLab 12.8 and earlier, see [Message: `sudo: gitlab-pg-ctl: command not found`](../replication/troubleshooting.md#message-sudo-gitlab-pg-ctl-command-not-found).
diff --git a/doc/administration/geo/index.md b/doc/administration/geo/index.md
index 6fdf213ac7..41f1189f4e 100644
--- a/doc/administration/geo/index.md
+++ b/doc/administration/geo/index.md
@@ -195,6 +195,10 @@ For information on how to update your Geo nodes to the latest GitLab version, se
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/35913) in [GitLab Premium](https://about.gitlab.com/pricing/) 13.2.
 
+CAUTION: **Caution:**
+Pausing and resuming of replication is currently only supported for Geo installations using an
+Omnibus GitLab-managed database. External databases are currently not supported.
+
 In some circumstances, like during [upgrades](replication/updating_the_geo_nodes.md) or a [planned failover](disaster_recovery/planned_failover.md), it is desirable to pause replication between the primary and secondary.
 
 Pausing and resuming replication is done via a command line tool from the secondary node.
diff --git a/doc/user/todos.md b/doc/user/todos.md
index 1fca3c0ab6..d2a9e1e2df 100644
--- a/doc/user/todos.md
+++ b/doc/user/todos.md
@@ -64,7 +64,7 @@ To-do triggers aren't affected by [GitLab notification email settings](profile/n
 
 NOTE: **Note:**
 When a user no longer has access to a resource related to a to-do (such as an
-issue, merge request, project, or group), for security reasons GitLab deletes
+issue, merge request, epic, project, or group), for security reasons GitLab deletes
 any related to-do items within the next hour. Deletion is delayed to prevent
 data loss, in the case where a user's access is accidentally revoked.
 
diff --git a/lib/gitlab/background_migration/remove_inaccessible_epic_todos.rb b/lib/gitlab/background_migration/remove_inaccessible_epic_todos.rb
new file mode 100644
index 0000000000..74c48b237c
--- /dev/null
+++ b/lib/gitlab/background_migration/remove_inaccessible_epic_todos.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module BackgroundMigration
+    # rubocop:disable Style/Documentation
+    class RemoveInaccessibleEpicTodos
+      def perform(start_id, stop_id)
+      end
+    end
+  end
+end
+
+Gitlab::BackgroundMigration::RemoveInaccessibleEpicTodos.prepend_if_ee('EE::Gitlab::BackgroundMigration::RemoveInaccessibleEpicTodos')
diff --git a/spec/controllers/confirmations_controller_spec.rb b/spec/controllers/confirmations_controller_spec.rb
new file mode 100644
index 0000000000..49a39f257f
--- /dev/null
+++ b/spec/controllers/confirmations_controller_spec.rb
@@ -0,0 +1,80 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe ConfirmationsController do
+  include DeviseHelpers
+
+  before do
+    set_devise_mapping(context: @request)
+  end
+
+  describe '#show' do
+    render_views
+
+    subject { get :show, params: { confirmation_token: confirmation_token } }
+
+    context 'user is already confirmed' do
+      let_it_be_with_reload(:user) { create(:user, :unconfirmed) }
+      let(:confirmation_token) { user.confirmation_token }
+
+      before do
+        user.confirm
+        subject
+      end
+
+      it 'renders `new`' do
+        expect(response).to render_template(:new)
+      end
+
+      it 'displays an error message' do
+        expect(response.body).to include('Email was already confirmed, please try signing in')
+      end
+
+      it 'does not display the email of the user' do
+        expect(response.body).not_to include(user.email)
+      end
+    end
+
+    context 'user accesses the link after the expiry of confirmation token has passed' do
+      let_it_be_with_reload(:user) { create(:user, :unconfirmed) }
+      let(:confirmation_token) { user.confirmation_token }
+
+      before do
+        allow(Devise).to receive(:confirm_within).and_return(1.day)
+
+        travel_to(3.days.from_now) do
+          subject
+        end
+      end
+
+      it 'renders `new`' do
+        expect(response).to render_template(:new)
+      end
+
+      it 'displays an error message' do
+        expect(response.body).to include('Email needs to be confirmed within 1 day, please request a new one below')
+      end
+
+      it 'does not display the email of the user' do
+        expect(response.body).not_to include(user.email)
+      end
+    end
+
+    context 'with an invalid confirmation token' do
+      let(:confirmation_token) { 'invalid_confirmation_token' }
+
+      before do
+        subject
+      end
+
+      it 'renders `new`' do
+        expect(response).to render_template(:new)
+      end
+
+      it 'displays an error message' do
+        expect(response.body).to include('Confirmation token is invalid')
+      end
+    end
+  end
+end
diff --git a/spec/controllers/search_controller_spec.rb b/spec/controllers/search_controller_spec.rb
index f244392bba..1293a1a218 100644
--- a/spec/controllers/search_controller_spec.rb
+++ b/spec/controllers/search_controller_spec.rb
@@ -272,7 +272,7 @@ RSpec.describe SearchController do
 
       expect(last_payload[:metadata]['meta.search.group_id']).to eq('123')
       expect(last_payload[:metadata]['meta.search.project_id']).to eq('456')
-      expect(last_payload[:metadata]['meta.search.search']).to eq('hello world')
+      expect(last_payload[:metadata]).not_to have_key('meta.search.search')
       expect(last_payload[:metadata]['meta.search.scope']).to eq('issues')
     end
   end
diff --git a/spec/controllers/users_controller_spec.rb b/spec/controllers/users_controller_spec.rb
index bec4b24484..2e57a90131 100644
--- a/spec/controllers/users_controller_spec.rb
+++ b/spec/controllers/users_controller_spec.rb
@@ -247,32 +247,99 @@ RSpec.describe UsersController do
 
   describe 'GET #contributed' do
     let(:project) { create(:project, :public) }
-    let(:current_user) { create(:user) }
+
+    subject do
+      get :contributed, params: { username: author.username }, format: format
+    end
 
     before do
-      sign_in(current_user)
+      sign_in(user)
 
       project.add_developer(public_user)
       project.add_developer(private_user)
+      create(:push_event, project: project, author: author)
+
+      subject
     end
 
-    context 'with public profile' do
+    shared_examples_for 'renders contributed projects' do
       it 'renders contributed projects' do
-        create(:push_event, project: project, author: public_user)
-
-        get :contributed, params: { username: public_user.username }
-
         expect(assigns[:contributed_projects]).not_to be_empty
+        expect(response).to have_gitlab_http_status(:ok)
       end
     end
 
-    context 'with private profile' do
-      it 'does not render contributed projects' do
-        create(:push_event, project: project, author: private_user)
+    %i(html json).each do |format|
+      context "format: #{format}" do
+        let(:format) { format }
 
-        get :contributed, params: { username: private_user.username }
+        context 'with public profile' do
+          let(:author) { public_user }
 
-        expect(assigns[:contributed_projects]).to be_empty
+          it_behaves_like 'renders contributed projects'
+        end
+
+        context 'with private profile' do
+          let(:author) { private_user }
+
+          it 'returns 404' do
+            expect(response).to have_gitlab_http_status(:not_found)
+          end
+
+          context 'with a user that has the ability to read private profiles', :enable_admin_mode do
+            let(:user) { create(:admin) }
+
+            it_behaves_like 'renders contributed projects'
+          end
+        end
+      end
+    end
+  end
+
+  describe 'GET #starred' do
+    let(:project) { create(:project, :public) }
+
+    subject do
+      get :starred, params: { username: author.username }, format: format
+    end
+
+    before do
+      author.toggle_star(project)
+
+      sign_in(user)
+      subject
+    end
+
+    shared_examples_for 'renders starred projects' do
+      it 'renders starred projects' do
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(assigns[:starred_projects]).not_to be_empty
+      end
+    end
+
+    %i(html json).each do |format|
+      context "format: #{format}" do
+        let(:format) { format }
+
+        context 'with public profile' do
+          let(:author) { public_user }
+
+          it_behaves_like 'renders starred projects'
+        end
+
+        context 'with private profile' do
+          let(:author) { private_user }
+
+          it 'returns 404' do
+            expect(response).to have_gitlab_http_status(:not_found)
+          end
+
+          context 'with a user that has the ability to read private profiles', :enable_admin_mode do
+            let(:user) { create(:admin) }
+
+            it_behaves_like 'renders starred projects'
+          end
+        end
       end
     end
   end
diff --git a/spec/features/explore/user_explores_projects_spec.rb b/spec/features/explore/user_explores_projects_spec.rb
index e217638f62..f11a6d1789 100644
--- a/spec/features/explore/user_explores_projects_spec.rb
+++ b/spec/features/explore/user_explores_projects_spec.rb
@@ -34,6 +34,16 @@ RSpec.describe 'User explores projects' do
 
     before do
       sign_in(user)
+
+      stub_feature_flags(project_list_filter_bar: false)
+    end
+
+    shared_examples 'minimum search length' do
+      it 'shows a prompt to enter a longer search term', :js do
+        fill_in 'name', with: 'z'
+
+        expect(page).to have_content('Enter at least three characters to search')
+      end
     end
 
     context 'when viewing public projects' do
@@ -42,6 +52,7 @@ RSpec.describe 'User explores projects' do
       end
 
       include_examples 'shows public and internal projects'
+      include_examples 'minimum search length'
     end
 
     context 'when viewing most starred projects' do
@@ -50,6 +61,7 @@ RSpec.describe 'User explores projects' do
       end
 
       include_examples 'shows public and internal projects'
+      include_examples 'minimum search length'
     end
 
     context 'when viewing trending projects' do
@@ -62,6 +74,7 @@ RSpec.describe 'User explores projects' do
       end
 
       include_examples 'shows public projects'
+      include_examples 'minimum search length'
     end
   end
 end
diff --git a/spec/features/markdown/mermaid_spec.rb b/spec/features/markdown/mermaid_spec.rb
index bdb549326f..58314a49c4 100644
--- a/spec/features/markdown/mermaid_spec.rb
+++ b/spec/features/markdown/mermaid_spec.rb
@@ -19,6 +19,9 @@ RSpec.describe 'Mermaid rendering', :js do
 
     visit project_issue_path(project, issue)
 
+    wait_for_requests
+    wait_for_mermaid
+
     %w[A B C D].each do |label|
       expect(page).to have_selector('svg text', text: label)
     end
@@ -39,6 +42,7 @@ RSpec.describe 'Mermaid rendering', :js do
     visit project_issue_path(project, issue)
 
     wait_for_requests
+    wait_for_mermaid
 
     expected = '<text style=""><tspan xml:space="preserve" dy="1em" x="1">Line 1</tspan><tspan xml:space="preserve" dy="1em" x="1">Line 2</tspan></text>'
     expect(page.html.scan(expected).count).to be(4)
@@ -65,6 +69,9 @@ RSpec.describe 'Mermaid rendering', :js do
 
     visit project_issue_path(project, issue)
 
+    wait_for_requests
+    wait_for_mermaid
+
     page.within('.description') do
       expect(page).to have_selector('svg')
       expect(page).to have_selector('pre.mermaid')
@@ -92,6 +99,9 @@ RSpec.describe 'Mermaid rendering', :js do
 
     visit project_issue_path(project, issue)
 
+    wait_for_requests
+    wait_for_mermaid
+
     page.within('.description') do
       page.find('summary').click
       svg = page.find('svg.mermaid')
@@ -118,6 +128,9 @@ RSpec.describe 'Mermaid rendering', :js do
 
     visit project_issue_path(project, issue)
 
+    wait_for_requests
+    wait_for_mermaid
+
     expect(page).to have_css('svg.mermaid[style*="max-width"][width="100%"]')
   end
 
@@ -147,6 +160,7 @@ RSpec.describe 'Mermaid rendering', :js do
     end
 
     wait_for_requests
+    wait_for_mermaid
 
     find('.js-lazy-render-mermaid').click
 
@@ -156,4 +170,55 @@ RSpec.describe 'Mermaid rendering', :js do
       expect(page).not_to have_selector('.js-lazy-render-mermaid-container')
     end
   end
+
+  it 'does not render more than 50 mermaid blocks', :js, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/234081' } do
+    graph_edges = "A-->B;B-->A;"
+
+    description = <<~MERMAID
+    ```mermaid
+    graph LR
+    #{graph_edges}
+    ```
+    MERMAID
+
+    description *= 51
+
+    project = create(:project, :public)
+
+    issue = create(:issue, project: project, description: description)
+
+    visit project_issue_path(project, issue)
+
+    wait_for_requests
+    wait_for_mermaid
+
+    page.within('.description') do
+      expect(page).to have_selector('svg')
+
+      expect(page).to have_selector('.lazy-alert-shown')
+
+      expect(page).to have_selector('.js-lazy-render-mermaid-container')
+    end
+  end
+end
+
+def wait_for_mermaid
+  run_idle_callback = <<~RUN_IDLE_CALLBACK
+  window.requestIdleCallback(() => {
+    window.__CAPYBARA_IDLE_CALLBACK_EXEC__ = 1;
+  })
+  RUN_IDLE_CALLBACK
+
+  page.evaluate_script(run_idle_callback)
+
+  Timeout.timeout(Capybara.default_max_wait_time) do
+    loop until finished_rendering?
+  end
+end
+
+def finished_rendering?
+  check_idle_callback = <<~CHECK_IDLE_CALLBACK
+    window.__CAPYBARA_IDLE_CALLBACK_EXEC__
+  CHECK_IDLE_CALLBACK
+  page.evaluate_script(check_idle_callback) == 1
 end
diff --git a/spec/finders/projects_finder_spec.rb b/spec/finders/projects_finder_spec.rb
index 8ae19757c2..de59852590 100644
--- a/spec/finders/projects_finder_spec.rb
+++ b/spec/finders/projects_finder_spec.rb
@@ -157,6 +157,29 @@ RSpec.describe ProjectsFinder, :do_not_mock_admin_mode do
         it { is_expected.to eq([public_project]) }
       end
 
+      describe 'filter by search with minimum search length' do
+        context 'when search term is shorter than minimum length' do
+          let(:params) { { search: 'C', minimum_search_length: 3 } }
+
+          it { is_expected.to be_empty }
+        end
+
+        context 'when search term is longer than minimum length' do
+          let(:project) { create(:project, :public, group: group, name: 'test_project') }
+          let(:params) { { search: 'test', minimum_search_length: 3 } }
+
+          it { is_expected.to eq([project]) }
+        end
+
+        context 'when minimum length is invalid' do
+          let(:params) { { search: 'C', minimum_search_length: 'x' } }
+
+          it 'ignores the minimum length param' do
+            is_expected.to eq([public_project])
+          end
+        end
+      end
+
       describe 'filter by group name' do
         let(:params) { { name: group.name, search_namespaces: true } }
 
diff --git a/spec/finders/starred_projects_finder_spec.rb b/spec/finders/starred_projects_finder_spec.rb
index 15d4ae52dd..f5d3314021 100644
--- a/spec/finders/starred_projects_finder_spec.rb
+++ b/spec/finders/starred_projects_finder_spec.rb
@@ -5,7 +5,7 @@ require 'spec_helper'
 RSpec.describe StarredProjectsFinder do
   let(:project1) { create(:project, :public, :empty_repo) }
   let(:project2) { create(:project, :public, :empty_repo) }
-  let(:other_project) { create(:project, :public, :empty_repo) }
+  let(:private_project) { create(:project, :private, :empty_repo) }
 
   let(:user) { create(:user) }
   let(:other_user) { create(:user) }
@@ -13,6 +13,9 @@ RSpec.describe StarredProjectsFinder do
   before do
     user.toggle_star(project1)
     user.toggle_star(project2)
+
+    private_project.add_maintainer(user)
+    user.toggle_star(private_project)
   end
 
   describe '#execute' do
@@ -20,22 +23,56 @@ RSpec.describe StarredProjectsFinder do
 
     subject { finder.execute }
 
-    describe 'as same user' do
-      let(:current_user) { user }
+    context 'user has a public profile' do
+      describe 'as same user' do
+        let(:current_user) { user }
 
-      it { is_expected.to contain_exactly(project1, project2) }
+        it { is_expected.to contain_exactly(project1, project2, private_project) }
+      end
+
+      describe 'as other user' do
+        let(:current_user) { other_user }
+
+        it { is_expected.to contain_exactly(project1, project2) }
+      end
+
+      describe 'as no user' do
+        let(:current_user) { nil }
+
+        it { is_expected.to contain_exactly(project1, project2) }
+      end
     end
 
-    describe 'as other user' do
-      let(:current_user) { other_user }
+    context 'user has a private profile' do
+      before do
+        user.update!(private_profile: true)
+      end
 
-      it { is_expected.to contain_exactly(project1, project2) }
-    end
+      describe 'as same user' do
+        let(:current_user) { user }
 
-    describe 'as no user' do
-      let(:current_user) { nil }
+        it { is_expected.to contain_exactly(project1, project2, private_project) }
+      end
 
-      it { is_expected.to contain_exactly(project1, project2) }
+      describe 'as other user' do
+        context 'user does not have access to view the private profile' do
+          let(:current_user) { other_user }
+
+          it { is_expected.to be_empty }
+        end
+
+        context 'user has access to view the private profile', :enable_admin_mode do
+          let(:current_user) { create(:admin) }
+
+          it { is_expected.to contain_exactly(project1, project2, private_project) }
+        end
+      end
+
+      describe 'as no user' do
+        let(:current_user) { nil }
+
+        it { is_expected.to be_empty }
+      end
     end
   end
 end
diff --git a/spec/requests/api/graphql/user/starred_projects_query_spec.rb b/spec/requests/api/graphql/user/starred_projects_query_spec.rb
index 8a1bd3d172..b098058a73 100644
--- a/spec/requests/api/graphql/user/starred_projects_query_spec.rb
+++ b/spec/requests/api/graphql/user/starred_projects_query_spec.rb
@@ -70,4 +70,31 @@ RSpec.describe 'Getting starredProjects of the user' do
       )
     end
   end
+
+  context 'the user has a private profile' do
+    before do
+      user.update!(private_profile: true)
+      post_graphql(query, current_user: current_user)
+    end
+
+    context 'the current user does not have access to view the private profile of the user' do
+      let(:current_user) { create(:user) }
+
+      it 'finds no projects' do
+        expect(starred_projects).to be_empty
+      end
+    end
+
+    context 'the current user has access to view the private profile of the user' do
+      let(:current_user) { create(:admin) }
+
+      it 'finds all projects starred by the user, which the current user has access to' do
+        expect(starred_projects).to contain_exactly(
+          a_hash_including('id' => global_id_of(project_a)),
+          a_hash_including('id' => global_id_of(project_b)),
+          a_hash_including('id' => global_id_of(project_c))
+        )
+      end
+    end
+  end
 end
diff --git a/spec/requests/api/graphql/user_query_spec.rb b/spec/requests/api/graphql/user_query_spec.rb
index 2f4dc0a916..bfd92f6344 100644
--- a/spec/requests/api/graphql/user_query_spec.rb
+++ b/spec/requests/api/graphql/user_query_spec.rb
@@ -77,7 +77,7 @@ RSpec.describe 'getting user information' do
             'webUrl' => presenter.web_url,
             'avatarUrl' => presenter.avatar_url,
             'status' => presenter.status,
-            'email' => presenter.email
+            'email' => presenter.public_email
           ))
       end
 
@@ -210,7 +210,7 @@ RSpec.describe 'getting user information' do
 
     context 'the user is private' do
       before do
-        user.update(private_profile: true)
+        user.update!(private_profile: true)
         post_graphql(query, current_user: current_user)
       end
 
@@ -220,6 +220,50 @@ RSpec.describe 'getting user information' do
         it_behaves_like 'a working graphql query'
       end
 
+      context 'we request the groupMemberships' do
+        let_it_be(:membership_a) { create(:group_member, :developer, user: user) }
+        let(:group_memberships) { graphql_data_at(:user, :group_memberships, :nodes) }
+        let(:user_fields) { 'groupMemberships { nodes { id } }' }
+
+        it_behaves_like 'a working graphql query'
+
+        it 'cannot be found' do
+          expect(group_memberships).to be_empty
+        end
+
+        context 'the current user is the user' do
+          let(:current_user) { user }
+
+          it 'can be found' do
+            expect(group_memberships).to include(
+              a_hash_including('id' => global_id_of(membership_a))
+            )
+          end
+        end
+      end
+
+      context 'we request the projectMemberships' do
+        let_it_be(:membership_a) { create(:project_member, user: user) }
+        let(:project_memberships) { graphql_data_at(:user, :project_memberships, :nodes) }
+        let(:user_fields) { 'projectMemberships { nodes { id } }' }
+
+        it_behaves_like 'a working graphql query'
+
+        it 'cannot be found' do
+          expect(project_memberships).to be_empty
+        end
+
+        context 'the current user is the user' do
+          let(:current_user) { user }
+
+          it 'can be found' do
+            expect(project_memberships).to include(
+              a_hash_including('id' => global_id_of(membership_a))
+            )
+          end
+        end
+      end
+
       context 'we request the authoredMergeRequests' do
         let(:user_fields) { 'authoredMergeRequests { nodes { id } }' }
 
diff --git a/spec/requests/api/projects_spec.rb b/spec/requests/api/projects_spec.rb
index 831b0d6e67..205c8655fa 100644
--- a/spec/requests/api/projects_spec.rb
+++ b/spec/requests/api/projects_spec.rb
@@ -1255,13 +1255,46 @@ RSpec.describe API::Projects do
       expect(json_response['message']).to eq('404 User Not Found')
     end
 
-    it 'returns projects filtered by user' do
-      get api("/users/#{user3.id}/starred_projects/", user)
+    context 'with a public profile' do
+      it 'returns projects filtered by user' do
+        get api("/users/#{user3.id}/starred_projects/", user)
 
-      expect(response).to have_gitlab_http_status(:ok)
-      expect(response).to include_pagination_headers
-      expect(json_response).to be_an Array
-      expect(json_response.map { |project| project['id'] }).to contain_exactly(project.id, project2.id, project3.id)
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(response).to include_pagination_headers
+        expect(json_response).to be_an Array
+        expect(json_response.map { |project| project['id'] })
+          .to contain_exactly(project.id, project2.id, project3.id)
+      end
+    end
+
+    context 'with a private profile' do
+      before do
+        user3.update!(private_profile: true)
+        user3.reload
+      end
+
+      context 'user does not have access to view the private profile' do
+        it 'returns no projects' do
+          get api("/users/#{user3.id}/starred_projects/", user)
+
+          expect(response).to have_gitlab_http_status(:ok)
+          expect(response).to include_pagination_headers
+          expect(json_response).to be_an Array
+          expect(json_response).to be_empty
+        end
+      end
+
+      context 'user has access to view the private profile' do
+        it 'returns projects filtered by user' do
+          get api("/users/#{user3.id}/starred_projects/", admin)
+
+          expect(response).to have_gitlab_http_status(:ok)
+          expect(response).to include_pagination_headers
+          expect(json_response).to be_an Array
+          expect(json_response.map { |project| project['id'] })
+            .to contain_exactly(project.id, project2.id, project3.id)
+        end
+      end
     end
   end
 
diff --git a/spec/validators/zoom_url_validator_spec.rb b/spec/validators/zoom_url_validator_spec.rb
new file mode 100644
index 0000000000..7d5c94bc24
--- /dev/null
+++ b/spec/validators/zoom_url_validator_spec.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe ZoomUrlValidator do
+  let(:zoom_meeting) { build(:zoom_meeting) }
+
+  describe 'validations' do
+    context 'when zoom link starts with https' do
+      it 'passes validation' do
+        zoom_meeting.url = 'https://zoom.us/j/123456789'
+
+        expect(zoom_meeting.valid?).to eq(true)
+        expect(zoom_meeting.errors).to be_empty
+      end
+    end
+
+    shared_examples 'zoom link does not start with https' do |url|
+      it 'fails validation' do
+        zoom_meeting.url = url
+        expect(zoom_meeting.valid?).to eq(false)
+
+        expect(zoom_meeting.errors).to be_present
+        expect(zoom_meeting.errors.first[1]).to eq 'must contain one valid Zoom URL'
+      end
+    end
+
+    context 'when zoom link does not start with https' do
+      include_examples 'zoom link does not start with https', 'http://zoom.us/j/123456789'
+
+      context 'when zoom link does not start with a scheme' do
+        include_examples 'zoom link does not start with https', 'testinghttp://zoom.us/j/123456789'
+      end
+    end
+  end
+end