The WooCommerce plugin before 4.7.0 for WordPress allows remote attackers to view the status of arbitrary orders via the order_id parameter in a fetch_order_status action.
https://github.com/advisories/GHSA-wwh8-v3j3-gxfw
https://github.com/Ko-kn3t/CVE-2020-29156
https://raw.githubusercontent.com/woocommerce/woocommerce/master/changelog.txt