Provide references for CVE-2021-4355.
Where can I find more information about CVE-2021-4355?
References are available at: https://www.wordfence.com/threat-intel/vulnerabilities/id/671f5ba5-1f18-49fa-aa97-eaebdb3417bb?source=cve, https://blog.nintechnet.com/wordpress-welcart-e-commerce-plugin-fixed-vulnerabilities/.