WooCommerce Product Add Ons Version 8.4.1 Changelog

The latest version is WooCommerce Product Add Ons 8.4.1, Released on August 19, 2026

Here’s what’s changed in WooCommerce Product Add Ons Version 8.4.1


  * Fix - Added a directory-listing placeholder to add-on file upload directories, and backfilled existing directories in the background.
* Fix - Secured zero-priced product calculations while preserving Smart Coupons credit amounts.
* Fix - Prevented "Translation loading was triggered too early" notices when the installed WooCommerce or PHP version is not supported.
* Fix - Fixed add-on data being dropped when adding products to the cart through the Store API `/batch` endpoint.
* Fix - Prevented a failed Store API add-to-cart validation from leaving a stale error notice behind for later requests.
* Fix - Prevented unauthorized access to order-item add-on configuration.
* Dev - Restored TLS certificate verification and fail-closed error handling in the release deployment script.
* Dev - Fixed the unit-test CI matrix so coverage config matches this repository, and restored the PHP 8.0 job.
* Dev - Enabled JavaScript linting in the release pipelines.
* Dev - Pinned and checksum-verified the WP-CLI executable used in release builds.
* Dev - Updated cross-env to v7 and PHP_CodeSniffer to 3.13.6 (security release).
* Dev - Added Markdown, dependency license, and WordPress.org Plugin Check gates to the pull request CI.
* Dev - Updated the npm build toolchain to resolve all remaining Dependabot security alerts.
* Dev - Standardized the package license identifier on GPL-3.0-or-later.
* Dev - Exposed the shared `.ai/commands` to agent tooling and documented the isolated worktree setup.
* Dev - Enabled CSS linting in CI and fixed source style violations.
* Dev - Enabled JavaScript linting in CI and migrated the ESLint setup to the flat config format required by ESLint 10, aligning the lint and formatting toolchain with WooCommerce core.
* Dev - Removed release credentials from pull request E2E jobs.
* Dev - Update wp-coding-standards/wpcs to 3.4.1 (security release) in the phpcs lint tooling.
* Dev - Update development Composer dependencies (PHPUnit, Guzzle PSR-7, PsySH, Symfony YAML) to resolve security advisories in the PHP test toolchain.
* Dev - Update development npm dependencies to resolve security advisories in the build toolchain.
* Dev - Hardened the QIT test workflow: pinned the QIT CLI version and stopped workflow inputs from being interpolated into shell source.
  

View the full WooCommerce Product Add Ons Changelog



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