22 files declare their use of ConfigCrudEvent

AdvisoriesConfigSubscriber.php in core/modules/system/src/EventSubscriber/AdvisoriesConfigSubscriber.php
CheckpointStorage.php in core/lib/Drupal/Core/Config/Checkpoint/CheckpointStorage.php
CheckpointStorageTest.php in core/tests/Drupal/Tests/Core/Config/Checkpoint/CheckpointStorageTest.php
CKEditor5CacheTag.php in core/modules/ckeditor5/src/EventSubscriber/CKEditor5CacheTag.php
ConfigCacheTag.php in core/modules/system/src/EventSubscriber/ConfigCacheTag.php
ConfigFactoryOverrideBaseTest.php in core/tests/Drupal/Tests/Core/Config/ConfigFactoryOverrideBaseTest.php
ConfigSchemaChecker.php in core/lib/Drupal/Core/Config/Development/ConfigSchemaChecker.php
ConfigSubscriber.php in core/modules/language/src/EventSubscriber/ConfigSubscriber.php
EventSubscriber.php in core/modules/config/tests/config_events_test/src/EventSubscriber.php
EventSubscriber.php in core/modules/config/tests/config_import_test/src/EventSubscriber.php
Fast404ExceptionHtmlSubscriber.php in core/lib/Drupal/Core/EventSubscriber/Fast404ExceptionHtmlSubscriber.php
LanguageConfigFactoryOverride.php in core/modules/language/src/Config/LanguageConfigFactoryOverride.php
LanguageConfigOverride.php in core/modules/language/src/Config/LanguageConfigOverride.php
LayoutBuilderConfigSubscriber.php in core/modules/layout_builder/src/EventSubscriber/LayoutBuilderConfigSubscriber.php
LocaleConfigSubscriber.php in core/modules/locale/src/LocaleConfigSubscriber.php
MediaConfigSubscriber.php in core/modules/media/src/EventSubscriber/MediaConfigSubscriber.php
MenuLinksetRoutes.php in core/modules/system/src/Routing/MenuLinksetRoutes.php
NodeAdminRouteSubscriber.php in core/modules/node/src/EventSubscriber/NodeAdminRouteSubscriber.php
QueryFactory.php in core/lib/Drupal/Core/Config/Entity/Query/QueryFactory.php
SystemConfigSubscriber.php in core/modules/system/src/SystemConfigSubscriber.php
TimeZoneResolver.php in core/modules/system/src/TimeZoneResolver.php
UpdateRegistry.php in core/lib/Drupal/Core/Update/UpdateRegistry.php

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.