Provide references for CVE-2021-4347.
Where can I find more information about CVE-2021-4347?
References are available at: https://www.wordfence.com/threat-intel/vulnerabilities/id/4174b47a-75d0-4ada-bd4d-efbaf0b1a049?source=cve, https://blog.nintechnet.com/wordpress-advanced-shipment-tracking-for-woocommerce-fixed-critical-vulnerability/.