The Fancy Product Designer WordPress plugin is vulnerable to SQL Injection due to insufficient escaping and parameterization of the ID parameter found in the ~/inc/api/class-view.php file which allows attackers with administrative level permissions to inject arbitrary SQL queries to obtain sensitive information, in versions up to and including 4.7.4.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-4134
• https://support.fancyproductdesigner.com/support/discussions/topics/13000031264
• https://www.wordfence.com/vulnerability-advisories/#CVE-2021-4134