Kinsta Must-Use Plugin — Changelog (original) (raw)

The Kinsta MU plugin is installed by default on every site hosted at Kinsta and is required to make sure your site runs smoothly in our environment. Check out our documentation on how to manage its settings or update it.

Below, you’ll find all the notable changes to this project.

3.5.1 (January 15, 2025)

Fixed

• Manual cache clearing now works correctly when autopurge is disabled.
• Removed duplicate entries of banned plugins from the warning list.

3.5.0 (January 01, 2025)

Changed

• Disabled curl_close on PHP 8.5 due to deprecation.

Fixed

• Improved compatibility with WP Pusher.
• Resolved issues with global autopurge status in WP-CLI.

3.4.0 (December 01, 2025)

Added

• Improved compatibility with some of the WordPress Core features, i.e. it should now automatically clear cache when header, widgets, and theme are updated or changed.
• Improved compatibility with WooCommerce, i.e. it should now automatically clear cache of the corresponding product page when the product stock is changed.
• Improved compatibility with Advanced Custom Fields (ACF), i.e. it should now automatically clear cache when ACF options are updated.
• Improved compatibility with Oxygen Builder i.e. it should now automatically clear cache when content on the builder editor is updated.
• New wp kinsta cache autopurge command to manage cache autopurge via WP-CLI.
• New WordPress filter hooks to manage cache autopurge via plugins or themes.

Changed

• Lifted BackWPup restriction i.e. we’re now allowing to install BackWPup 5.6.0 or the latest..

3.3.2 (August 04, 2025)

Changed

• Remove strict_types declarations
• Add namespace on main plugin file

3.3.1 (July 30, 2025)

Fixed

• Fix calling purge_complete_caches method on null error

3.3.0 (July 29, 2025)

Fixed

• Invalid URLs shown on the UI for adding custom URL to purge.

Changed

• Improve all cache clearing in CLI.
• Clear all cache after running wp cache flush.
• Improve “litespeed-cache” from the banned plugin list.

Added

• Elementor cache integration .

3.2.0 (May 26, 2025)

Fixed

• Compatibility with opcache_reset function before executing the function.
• Compatibility with WP Rocket plugin.

Changed

• Standardize notices, and messages shown for better clarity and consistency.

Added

• Loading state when triggering cache clearing.

3.1.1 (February 28, 2024)

Fixed

• Readd the missing --all option to the
  wp kinsta cache purge cli command

3.1.0 (February 22, 2024)

Changed

• Updated dashboard styling to rely on WP core styles as much as
  possible.

Fixed

• Fixed unexpected extra slash adding issues when the home URL and the
  custom clear path are combined.

3.0.1 (September 28, 2023)

Added

• CDN Cache clearing functionality
• Properly detect Kinsta Cache headers in Site Health Check when Edge
  Cache is disabled

Changed

• KINSTAMU_ROLE is now deprecated in favor of
  KINSTAMU_CAPABILITY
• Clean up and standardize wording in WP-CLI output
• wp kinsta cache purge now takes --site,
  --cdn, and --object to clear all the forms of
  cache

Fixed

• “Clear All Caches” from the admin bar now works properly
• Fixed PHP 8.2 deprecation notices

3.0.0 (December 8, 2022)

Added

• Admin setting to disable autopurge
• Object cache clearing also clears PHP OPCache

Changed

• Revamp styling to be simpler and match the new style of
  MyKinsta
• Better detection for which pages to purge on save
• File and folder organization
• Clean up unused code

Fixed

• Corrupt settings will no longer break the site
• Comment edits clear the cache

2.4.8 (July 11, 2022)

Added

• Added KINSTAMU_CACHE_PURGE_TIMEOUT to override the
  default 5 second timeout

Changed

• Switched cache clearing calls to use curl instead of
  wp_remote_post

Fixed

• Banned plugins banner is no longer broken for a deleted plugin not
  properly deactivated
• Term and menu edits no longer purge the cache if
  KINSTAMU_DISABLE_AUTOPURGE is set to true

2.4.7

Added

• Added WordPress-Docs to PHPCS standards.

Changed

• Cache classes refactor to modernize code.

2.4.6

Added

• New action hook after full page/object cache purging is
  complete.
• New filter hook to block clearing cache from WP Admin.
• Better detection for WordPress mobile mode via the wp_is_mobile
  filter.

Changed

• Post types that are not viewable will no longer be purged from
  cache.

2.4.5

Fixed

• Cache purge should now work again for comments added to a post via
  the front-end comments form.

2.4.4

Added

• Cache purge will now happen automatically for term update and
  deletion.

2.4.3

Fixed

• Make Admin Bar cache clear links request the plugin page so referrer
  works correctly.
• Fix PHP warnings.

2.4.2

Fixed

• Fix PHP to be testable with PHPCS against WordPress-Core coding
  standards.

Changed

• Remove WP-Optimize from warning list.

2.4.1

Fixed

• Fix referrer URL for Admin Bar cache clear links duplicating the
  Subsite path in Multisite Networks.

2.4.0

Added

• Add Duplicator Pro to warning list.

2.3.9

Fixed

• The Clear Cache links on the Admin Toolbar will now try to redirect
  to the referring URL instead of getting redirected to the admin-ajax.php
  URL displaying 0.
• Fix accessibility issue on Clear Cache submenu when Object Cache is
  enabled.

2.3.8

Added

• The plugin now has a local development environment to make
  development a better process for contributors.

2.3.7

Fixed

• Undefined index in cache clear function.
• Deprecated code for PHP 8.0.

2.3.4

Changed

• UpdraftPlus removed from the banned plugins list.
• EWWW Image Optimizer removed from the banned plugins list.

2.3.3

Changed

• Banned plugins list update.
• Plugin URL points to the Kinsta KB page.
• Better cache purge hook handling on post status change.

Fixed

• Undefined function get_current_screen in some cases.

2.3.2

Fixed

• KINSTA_CDN_USERDIRS related bug fix.

2.3.1

Added

• Disable Swift Performance plugin cache.

Changed

• Wordfence plugin integration enhancements.

2.3.0

Added

• Handling of CDN asset rewrites in REST API requests.

2.2.4

Changed

• Quick fix: extend function result check.

2.2.3

Changed

• Quick fix: a missing variable.

2.2.2

Changed

• Quick fix: image source rewrite bug in case of assets starts with
  “//” or loaded from third-party source.

2.2.1

Changed

• Quick fix: Undefined index: excludes.

2.2.0

Changed

• Fixed minor dashboard issues.
• Improved security.
• Switched from absolute file path includes to the relative file
  path.
• Prevent CDN rewriting of admin-ajax.php.
• Rewrite Image Attachment URLs in WP-API sub-resources.

Added

• Add an option to exclude file types from CDN URL.

2.1.2

Changed

• Quick fix: removed unnecessary span tags from the plugin’s “Add A
  Custom URL” dashboard when the site has a very long domain.

2.1.1

Changed

• Quick fix for an odd WP behavior of including the functions.php in
  the compat folder.

2.1.0

Changed

• Removed the PushEngage plugin from the plugin warning list.
• Removed the WordFence plugin from the plugin warning list.
• Removed abandoned plugin API endpoints.

Added

• Set WORDFENCE_DISABLE_LIVE_TRAFFIC to true and show
  error message if it is already set to false.

2.0.21

Changed

• Fixed missing wp_json_encode function before WP
  4.1.
• Fixed minor CSS issue.

2.0.20

Changed

• Minor bug fixes.
• Add UTM source to the Kinsta.com link.

Added

• The KINSTAMU_ROLE constant.
• The KINSTA_CDN_USERURL constant.
• The wp kinsta plugin list WP CLI command.

2.0.19

Changed

• Updated the white-labeling options for the banned plugin
  messages.

2.0.18

Added

• PDF file is added to the CDN rewritable list.
• Banned plugins are deactivated from now on.
• Disallowed plugins are detected and a notice showed to the
  appropriate admin users.
• These plugins can’t be installed via the online plugin installer
  from now on.

2.0.17

Changed

• Updated an init hooks priority.

2.0.16

Added

• Added a variable to prevent repeted single page cache purge during
  the same action.
• Added a variable to prevent repeted all cache purge during the same
  init.
• Added JS level HTML escape.

Changed

• Update the cache purge class initiate order.
• Fixed a white-label related minor issue.

2.0.15

Fixed

• Backward compatible issue with WP Rocket plugin version 3.0.1.

2.0 – 2.0.14

Added

• Integrated CDN.
• A PHP constant for defining custom path for the mu plugin’s assets,
  e.g.
  define( 'KINSTAMU_CUSTOM_MUPLUGIN_URL', 'http://yourdomain.com/custom-wp-content/mu-plugins');.
• A PHP constant for switching of the server level cache’s auto purge
  on add/update/delete posts, e.g.
  define('KINSTAMU_DISABLE_AUTOPURGE', true);.
• WP CLI issue warning.
• Sitemap to the purge list.
• Purge list filters/hooks.
• The KINSTA_CACHE_DEBUG constant.
• Option to add further directories to the CDN replaceable paths.
• Default AMP pages purge added.

Changed

• New Kinsta UI design.

Fixed

• Several multisite issues with purge part.
• The og:images URL. It seems OG images don’t like the
  “//” beginning.
• The RegEx made possible that some links which directly called from
  “/” were replaced.
• Sometimes, the script made unnecessary replaces. Now it only does it
  when the asset belongs to the following extensions:
  ogg|ogv|svg|svgz|eot|otf|woff|woff2|mp4|mp3|ttf|css|js|jpg|jpeg|gif|png|ico|webp|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf.
• Symlink issue with Bedrock installs. Using WPMU_PLUGIN_URL constant
  from now on.
• HTTP – HTTPS asset issue when the site URL is HTTP but the site is
  called via HTTPS.
• Poor looking URL path in case of long URL.
• Text update related to Object Cache.
• Some rare warning issues.
• Feed URLs are purged inmediattely after updates.

1.5

Added

• Timeouts to internal curl calls.

Changed

• HTTP detection.
• Replaced site_url() with home_url() to be
  more reliable.

Removed

• Unnecessary remaining test files.