Description
WordPress Plugin Easy Registration Forms is prone to a cross-site request forgery vulnerability. Exploiting this issue may allow a remote attacker to perform certain administrative actions and gain unauthorized access to the affected application; other attacks are also possible. WordPress Plugin Easy Registration Forms version 2.1.1 is vulnerable; prior versions may also be affected.
Remediation
Edit the source code to ensure that CSRF protection is implemented with Nonce-like mechanism or disable the plugin until a fix is available
References
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39353
https://wordpress.org/plugins/easy-registration-forms/#description
Related Vulnerabilities
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WordPress Plugin Conditional Marketing Mailer for WooCommerce Cross-Site Request Forgery (1.5.2)